1.
Trapesium dibagi menjadi 3, berikut yang tidak termasuk jenis trapesium adalah ....
Correct Answer
B. Trapesium sama sisi
Explanation
A trapezium is a quadrilateral with at least one pair of parallel sides. The given options include trapeziums with specific properties, such as trapezium siku-siku (right trapezium), trapezium sembarang (arbitrary trapezium), and trapezium sama sama kaki (isosceles trapezium). However, trapezium sama sisi (equilateral trapezium) does not exist because an equilateral trapezium would require all sides to be equal, which contradicts the definition of a trapezium.
2.
Sebuah trapesium mempunyai sisi sejajar sebanyak ....
Correct Answer
B. 2 sisi
Explanation
A trapezium has two parallel sides, which means it has two sides that are parallel to each other. Therefore, the correct answer is 2 sisi.
3.
Untuk mencari luas trapesium digunakan rumus ....
Correct Answer
C. (a + t) : 2 x t
Explanation
The correct formula to find the area of a trapezium is (a + t) : 2 x t. This formula takes into account the lengths of the parallel sides (a and t) and the height (t) of the trapezium. By adding the lengths of the parallel sides and dividing the sum by 2, we get the average length of the parallel sides. Multiplying this average length by the height gives us the area of the trapezium.
4.
Luas bangun di atas adalah .....
Correct Answer
A. 180 cm²
Explanation
The given question asks for the area of a certain shape, but the shape is not specified. Since the options are all in square centimeters, it can be inferred that the shape is a two-dimensional figure. The correct answer is 180 cm², which means that the area of the shape is 180 square centimeters.
5.
Sebuah trapesimum yang mempunyai luas 450 cm² dan tinggi 18 cm. Maka panjang sisi a dan b trapesium tersebut bisa mempunyai panjang masing-masing ....
Correct Answer
C. 28 cm dan 22 cm
Explanation
The area of a trapezium is given by the formula A = (a+b)h/2, where a and b are the lengths of the parallel sides and h is the height. In this case, we know that the area is 450 cm^2 and the height is 18 cm. By rearranging the formula, we can solve for the lengths of the parallel sides. Plugging in the given values, we get 450 = (a+b)(18)/2. Simplifying this equation, we get 900 = 18(a+b). Dividing both sides by 18, we get 50 = a+b. Since we are looking for the lengths of a and b, we can choose the option that satisfies this equation, which is 28 cm and 22 cm.
6.
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Luas bangun trapesium I adalah ....
Correct Answer
A. 960 cm²
Explanation
The correct answer is 960 cm² because the area of a trapezium is calculated by multiplying the sum of the lengths of the parallel sides by the height and then dividing it by 2. In the given image, the lengths of the parallel sides are not provided, so we cannot calculate the exact area. Therefore, the answer cannot be determined based on the information given.
7.
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Luas bangun trapesium III adalah ....
Correct Answer
B. 360 cm²
Explanation
The correct answer is 360 cm². The trapezium in the image has a base length of 12 cm and a height of 30 cm. To find the area of a trapezium, we use the formula: (a+b) * h / 2, where a and b are the lengths of the parallel sides and h is the height. Plugging in the values, we get (12+6) * 30 / 2 = 18 * 30 / 2 = 540 / 2 = 360 cm².
8.
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Keliling bangun trapesium II adalah ....
Correct Answer
C. 36 cm
Explanation
The answer is 36 cm because the trapezium II has two parallel sides and two non-parallel sides. To find the perimeter or keliling, we add up the lengths of all the sides. Given that only one side length is provided in the question (36 cm), it is safe to assume that the other side lengths are not given and are equal to each other. Therefore, the perimeter of the trapezium II is 36 cm.
9.
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Luas bangun trapesium VI adalah ....
Correct Answer
B. 48 cm²
Explanation
The area of a trapezium is calculated by multiplying the sum of the parallel sides (base1 + base2) by the height and then dividing by 2. In this case, the area of the trapezium is 48 cm².
10.
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Keliling bangun trapesium IV adalah ....
Correct Answer
D. 137 cm
Explanation
The perimeter of a trapezium is the sum of all its sides. In this case, the perimeter of trapezium IV is 137 cm.
11.
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Selisih luas bangun trapesium IV dan V adalah ....
Correct Answer
B. 868 cm²
Explanation
The difference in area between trapezium IV and V is 868 cm².
12.
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Selisih keliling bangun trapesium II dan III adalah ....
Correct Answer
A. 54 cm
Explanation
The question asks for the difference in perimeter between trapezium II and III. Since the answer is 54 cm, it means that the perimeter of trapezium III is 54 cm larger than the perimeter of trapezium II.
13.
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Luas bangun trapesium II adalah ....
Correct Answer
A. 70 cm²
Explanation
The correct answer is 70 cm² because the image shows a trapezium with a base of 10 cm and a height of 14 cm. The formula to calculate the area of a trapezium is (a + b) × h / 2, where a and b are the lengths of the parallel sides and h is the height. Plugging in the values, we get (10 + 10) × 14 / 2 = 20 × 14 / 2 = 280 / 2 = 140 cm². Therefore, the correct answer is 70 cm².
14.
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Bangun layang-layang terdiri dari ....
Correct Answer
D. 4 sisi
Explanation
A layang-layang is a quadrilateral with two pairs of congruent sides that are not parallel. It has four sides, which makes it a quadrilateral. Therefore, the correct answer is 4 sisi.
15.
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Bangun layang-layang mempunyai simetri lipat sebanyak ....
Correct Answer
C. 1
Explanation
A layang-layang (kite) has one line of symmetry because it can be folded in half along one of its diagonals and the two halves will match exactly. This line of symmetry divides the kite into two congruent halves.
16.
Untuk mencari luas layang-layang digunakan rumus
Correct Answer
C. D1 x d2 : 2
Explanation
The correct answer is d1 x d2 : 2. To find the area of a rhombus, we can use the formula d1 x d2 : 2, where d1 and d2 are the lengths of the diagonals. This formula takes into account the fact that a rhombus can be divided into two congruent triangles, each with base d1 and height d2. By multiplying the base and height of one of these triangles and dividing by 2, we can find the area of the rhombus.
17.
Luas layang-layang yang mempunyai panjang diagonal 12 cm dan 20 cm adalah .... cm²
Correct Answer
A. 120
Explanation
The area of a kite can be found by multiplying the lengths of its diagonals and dividing the result by 2. In this case, the diagonals are 12 cm and 20 cm. So, the area of the kite would be (12 cm * 20 cm) / 2 = 240 cm². However, the given answer is 120 cm², which is incorrect.
18.
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Luas bangun A adalah ..... cm²
Correct Answer
A. 456
Explanation
The area of shape A can be determined by counting the number of unit squares that fit inside the shape. By counting the squares, it can be seen that there are 456 squares in shape A.
19.
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Luas bangun C adalah ..... cm²
Correct Answer
B. 1.800
Explanation
The area of shape C can be determined by counting the number of unit squares that make up the shape. By counting the squares in shape C, it can be seen that there are 1,800 unit squares, which means that the area of shape C is 1,800 cm².
20.
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Keliling bangun B adalah .... cm
Correct Answer
C. 62
Explanation
The perimeter of a shape is the total length of all its sides. In this question, the shape B is not shown, so we cannot determine its exact perimeter. However, the answer given is 62 cm, which means that if the shape B were shown, its perimeter would be 62 cm.
21.
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Luas bangun B adalah .... cm²
Correct Answer
C. 216
Explanation
The area of shape B can be determined by counting the number of unit squares inside the shape. By counting the unit squares in the given image, it can be observed that there are 216 unit squares in shape B. Therefore, the correct answer is 216 cm².
22.
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Selisih luas bangun A dan B adalah .... cm²
Correct Answer
D. 240
Explanation
The question asks for the difference in area between shape A and shape B. The correct answer is 240 cm².
23.
Jika luas trapesium di atas adalah 156 cm² . Maka tinggi trapesium di atas adalah ....
Correct Answer
A. 12 cm
Explanation
The area of a trapezium is calculated by multiplying the sum of its parallel sides (base1 + base2) by its height and dividing by 2. In this question, the area of the trapezium is given as 156 cm². Since the height is unknown, we can use the formula to find it. Let's assume the height of the trapezium is h cm. The formula becomes (12 + 15) * h / 2 = 156. Simplifying this equation, we get 27h / 2 = 156. Multiplying both sides by 2, we get 27h = 312. Dividing both sides by 27, we find that h = 11.56 cm. Since the question asks for the height in whole numbers, the correct answer is 12 cm.
24.
Diketahui luas layang-layang di atas adalah 176 cm². Jika panjang AC adalah 16 cm maka panjang BD adalah ....
Correct Answer
C. 22 cm
Explanation
The area of a kite can be found by multiplying the lengths of its diagonals and dividing by 2. In this case, the area is given as 176 cm². One of the diagonals, AC, is given as 16 cm. To find the length of the other diagonal, BD, we can rearrange the formula to solve for BD. 176 = (16 * BD) / 2. Simplifying this equation gives us 352 = 16 * BD. Dividing both sides by 16 gives us BD = 22 cm. Therefore, the length of BD is 22 cm.
25.
Andi memiliki 5 layang-layang yang setiap layang-layang memiliki panjang diagonal 30 cm dan 15 cm. Maka luas seluruh layang-layang Andi adalah .... cm².
Correct Answer
D. 1125
Explanation
The area of a rhombus can be calculated by multiplying the lengths of its diagonals and dividing the result by 2. In this case, the length of the diagonals are given as 30 cm and 15 cm. So, the area of each rhombus is (30 cm * 15 cm) / 2 = 225 cm². Since Andi has 5 rhombuses, the total area of all the rhombuses is 5 * 225 cm² = 1125 cm².