1.
I need to figure surface area for
Correct Answer
B. Wrapping a present
Explanation
The correct answer is "wrapping a present" because when wrapping a present, you need to measure the surface area of the paper or wrapping material to ensure that it is large enough to cover the entire gift. This involves calculating the area of each side of the present and adding them together to determine the total surface area needed.
2.
Surface Area is found by:
Correct Answer
B. Adding the area of all the sides together
Explanation
remeber our jigsaw lesson.
3.
Given a cylinder with a radius of 5 and a hight of seven, what is the surface area?
Correct Answer
C. 376.8 units squared
Explanation
circumfrence* hight + circle on top+ circle on bottom=
31.4*7 + 78.5 + 78.5
4.
Find the surface area ofa pyramid with a square base legnth 10 and a slant height of 13
Correct Answer
D. 340 units squared
Explanation
special right triangle to find height of 12. 5*12*(.5)=30 for each right triangle, 60 for each side. 4 sides since its a square so 60+60+60+60+ base. Base =10*10 so 240+100.
5.
Find the total Surface area of a cone with radius 3, slant height of 5.
Correct Answer
D. 75.4 units squared
Explanation
circumfrence* slant legnth + base
6.
What is the volume of a rectangular prism that is 1 cm. by 2 cm. by 3 cm.?
Correct Answer
A. 6 cu. cm.
Explanation
The volume of a rectangular prism can be calculated by multiplying the length, width, and height of the prism. In this case, the length is 1 cm, the width is 2 cm, and the height is 3 cm. Multiplying these values together (1 cm x 2 cm x 3 cm) gives us a volume of 6 cubic centimeters.
7.
If you enlarge a rectangular prism with dimensions of 1 cm. by 2 cm. by 3 cm. by a scale factor of 3, what will its new dimensions be?
Correct Answer
A. 3 cm. by 6 cm. by 9 cm.
Explanation
When you enlarge a rectangular prism with dimensions of 1 cm by 2 cm by 3 cm by a scale factor of 3, each dimension is multiplied by the scale factor. Therefore, the new dimensions will be 1 cm x 3 = 3 cm, 2 cm x 3 = 6 cm, and 3 cm x 3 = 9 cm.
8.
How many square feet of sand can fit into a sandbox that is 8 feet by 8 feet and 1 foot high?
Correct Answer
A. 64 square feet
Explanation
The sandbox is 8 feet by 8 feet, so the area of the sandbox is 8 feet multiplied by 8 feet, which equals 64 square feet. The height of the sandbox is 1 foot, but since we are looking for the area, we do not need to consider the height. Therefore, the correct answer is 64 square feet.
9.
How many square feet of cement will it take to fill a hole that is 6" by 3 feet by 6 feet?
Correct Answer
B. 9 sq. ft.
Explanation
To find the square footage of the hole, we need to multiply the length and width of the hole. The hole is 6 inches by 3 feet by 6 feet. We need to convert the measurements to the same unit, so let's convert 6 inches to feet. Since there are 12 inches in a foot, 6 inches is equal to 0.5 feet. Now we can calculate the square footage by multiplying 0.5 feet by 3 feet by 6 feet, which equals 9 square feet. Therefore, it will take 9 square feet of cement to fill the hole.
10.
Which rectangular prism has a larger surface area?
Prism A: Dimensions are 5 by 4 by 2
Prism B: Dimensions are 6 by 3 by 2
Correct Answer
A. Prism A
Explanation
Prism A has a larger surface area because the formula for surface area of a rectangular prism is 2lw + 2lh + 2wh. By plugging in the dimensions of Prism A (5, 4, and 2), we get a surface area of 64. For Prism B, with dimensions 6, 3, and 2, the surface area is 52. Therefore, Prism A has a larger surface area.
11.
Which rectangular prism has a larger volume?
Prism A: Dimensions are 5 by 4 by 2
Prism B: Dimensions are 6 by 3 by 2
Correct Answer
A. Prism A
Explanation
Prism A has a larger volume because the product of its dimensions (5 x 4 x 2) is 40, while the product of Prism B's dimensions (6 x 3 x 2) is 36. Therefore, Prism A has a greater volume than Prism B.
12.
What is the surface area of the rectangular prism?
Correct Answer
A. 358
13.
What is the Volume of the prism below:
Correct Answer
B. 420
14.
What is the surface area of the pyramid below?
Correct Answer
C. 225
Explanation
The correct answer is 225. The surface area of a pyramid is calculated by finding the sum of the areas of all its faces. In this case, since the question does not provide any measurements or dimensions for the pyramid, it is not possible to calculate the exact surface area. Therefore, the explanation for the given answer cannot be determined.
15.
What is the volume of the pyramid below?
Correct Answer
D. 37.33
Explanation
The volume of a pyramid is calculated by multiplying the area of the base by the height and dividing the result by 3. Since the question does not provide the dimensions of the pyramid, it is not possible to calculate the volume. Therefore, an explanation for the given correct answer is not available.
16.
What is the surface area of the cyliner?
Correct Answer
B. 1005.31
17.
What is the volume of the cylinder below?
Correct Answer
C. 2412.74
Explanation
The volume of a cylinder is calculated by multiplying the area of the base by the height. In this case, the volume is 2412.74.
18.
What is the surface area of the cone below?
Correct Answer
C. 742.42
19.
What is the volume of the cone below?
Correct Answer
D. 1340.21
20.
A rectangular prism has a volume of 120. Which dimensions can be the correct ones?
Correct Answer
C. 8*3*5
Explanation
What of this formulas could give you the volume?? (Think about this.)
Multiply the numbers and chck which one will give you 120.
21.
To find the radius of a cylinder you should measure the diameter and divide by 2 ?
Correct Answer
A. True
Explanation
To find the radius of a cylinder, you need to measure the diameter and then divide it by 2. This is because the diameter is the distance across the widest part of the circle, while the radius is the distance from the center of the circle to any point on its edge. By dividing the diameter by 2, you can determine the radius of the cylinder accurately. Therefore, the statement is true.