Luttrell 2012
50
Name: ______________________
Date: _____
3m-Surface Area & Volume of Pyramids & Spheres
A calculator is allowed. If your calculator does
not have a π button, use 3.14 to approximate π.
1. A pyramid is twice as big as a similar pyramid with volume of 25 in
3
. Find the volume of the
other pyramid.
2. A pyramid has a square base of sides 5 inches and a height of 3 inches. What’s the volume of
the pyramid?
3. A triangular pyramid is made up of equilateral triangles with a side of 2 feet. What is the
pyramid’s surface area? (Use Pythagorean Theorem to find the height of a triangle.)
4. A pyramid has a triangular base with area of 15 squared inches and a height of 6 inches.
What’s the volume of the pyramid.
5. A man decides to make a playhouse that’s a triangular pyramid like the one in question #4,
but three times as large. What would be the new volume?
6. Find the volume of a sphere that has a radius of 9 inches.
7. Find the volume of a sphere that has a radius of 4 inches.
8. Find the surface area of a sphere that has a radius of 9 inches.
9. Find the surface area of a sphere that has 4 inches.
10. A. Finding the amount of leather to cover a basketball is an example of (area, volume).
B. Finding the amount of air contained in a basketball is an example of (area, volume).