find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm:
a. 324 cm
b. 108 cm
c. 36 cm
d. 152 cm
Please help!!
Ms. Sue, are you online?
http://math.about.com/od/formulas/ss/surfaceareavol_5.htm
I'll be glad to check your answer.
Right.
the answer is b
am glad to help?
To find the volume of a square pyramid, you can use the formula:
Volume = (1/3) * (base area) * (height)
In this case, the base shape is a square, so the base area can be calculated by multiplying the length of one side of the square by itself.
Base area = (side length) * (side length)
Given that the base length of the square pyramid is 9 cm, the base area would be:
Base area = 9 cm * 9 cm = 81 cm²
Next, using the formula for the volume of a pyramid, we can calculate the volume by multiplying the base area by the height and dividing the result by 3:
Volume = (1/3) * 81 cm² * 4 cm
= (1/3) * 324 cm³
= 108 cm³
Therefore, the correct answer is option b. 108 cm³.