1.
What do we mean when we talk about area?
Correct Answer
A. The amount of surface/space that is covered
Explanation
When we talk about area, we are referring to the amount of surface or space that is covered. This means that we are considering the measurement of the two-dimensional space within the boundaries of an object or shape. It does not refer to the type of object, the space around it, or the number of sides it has. The focus is solely on the extent of coverage or surface area.
2.
How do we find the area of an object?
Correct Answer
C. Length x width
Explanation
The correct answer is "length x width" because to find the area of an object, you need to multiply the length of one side by the width of another side. This formula works for calculating the area of various shapes, such as rectangles, squares, and parallelograms.
3.
If a rectangle has : length= 12cm, Width = 4cm then its area is?
Correct Answer
B. 48cm^{2}
Explanation
The area of a rectangle is calculated by multiplying its length by its width. In this case, the length is given as 12 cm, and the width is given as 4 cm. Therefore, the area of the rectangle is 12 cm * 4 cm = 48 cm2.
4.
What is the area of 6 square?
Correct Answer
C. 36
Explanation
The area of a square is calculated by multiplying the length of one side by itself. In this case, since the length of one side is 6, the area would be 6 multiplied by 6, which equals 36.
5.
What is the perimeter of a rectangle that has a length of 13 inches and a width of 5 inches?
Correct Answer
A. 36 inches
Explanation
The perimeter of a rectangle is calculated by adding up all the sides. In this case, the length is 13 inches and the width is 5 inches. To find the perimeter,
Perimeter = 2 * (Length + Width)
We add twice the length to twice the width: 2(13) + 2(5) = 26 + 10 = 36 inches.
6.
What is the area of a square 5 by 5 ft.?
Correct Answer
D. 25 sq. ft.
Explanation
The area of a square is calculated by multiplying the length of one side by itself. In this case, the length of one side is given as 5 ft. Therefore, the area of the square is 5 ft * 5 ft = 25 sq. ft.
7.
What is the area of a square 9 by 9 ft.?
Correct Answer
B. 81 sq. ft.
Explanation
The area of a square is calculated by multiplying the length of one side by itself. In this case, the length of one side is given as 9 ft. Therefore, the area of the square is 9 ft * 9 ft = 81 sq. ft.
8.
What is the perimeter of a rectangle 6 by 21 ft?
Correct Answer
E. 54 ft.
Explanation
The perimeter of a rectangle is calculated by adding the lengths of all four sides. In this case, the length of one side is given as 6 ft and the length of the other side is given as 21 ft. Therefore, the perimeter can be calculated as 2(6 ft + 21 ft) = 2(27 ft) = 54 ft.
9.
What is the perimeter of a rectangle 6 by 21 ft?
Correct Answer
E. 54 ft.
Explanation
The perimeter of a rectangle is calculated by adding up all four sides. In this case, the rectangle has a length of 6 ft and a width of 21 ft. To find the perimeter, we add up all four sides: 6 + 6 + 21 + 21 = 54 ft. Therefore, the correct answer is 54 ft.
10.
How do you find the perimeter of an object?
Correct Answer
B. Add up all of the sides.
Explanation
To find the perimeter of an object, you need to add up all of its sides. The perimeter is the total length of the boundary of the object, so you must consider each side and sum them together. Adding up one side two times would only give you the length of that particular side, not the entire perimeter. Multiplying all of the sides or two of the sides would give you the area, not the perimeter. Therefore, the correct approach is to add up all of the sides to find the perimeter.