10.7 Volume of Spheres

Abe wanted to know how much ice cream he got in one scoop. The radius of a scoop is 2 inches. Find the volume. Use 3.14 for pi.

• 345.3 in³

• 33.5 in³

• 25.1 in³

• 50.2 in³

The formula  $V\ =\ \frac{4}{3}\pi r^3$  is the volume formula for a ...

• Sphere

• Hemisphere

• Cone

• Cylinder

Find the volume of the given sphere.

• 1,4679.8 cubic km

• 995.6 cubic km

• 1,000.9 cubic km

• 1,150.3 cubic km

Abby is blowing up spherical balloons for her brother's birthday party. The balloons have a radius of 3 inches. If she can inflate the balloon at a rate of 200 cubic in. per minute, how long would it take her to inflate the balloon?

• 0.6 min.

• 1.6 min.

• 2.5 min.

• 0.3 min.

Find the volume of the given hemisphere.

• 1,216.7 cubic in.

• 879.6 cubic in.

• 991.4 cubic in.

• 1,072.3 cubic in.

A spherical ball has a diameter of 8 inches. The ball has a slow leak which the air escapes at a rate of 2.5 cubic inches per second. How long would it take the ball to deflate?

• 101.6 s

• 98.6 s

• 92.4 s

• 107.2 s

The radius of a basketball is 4.7 inches. What is the volume of the basketball?

• 400.6 cubic in.

• 398.8 cubic in.

• 434.9 cubic in.

• 500.3 cubic in.

Find the volume of the given composite solid.

• 103.4 cubic in.

• 98.5 cubic in.

• 113.1 cubic in.

• 121.8 cubic in.

Find the volume of the following shape.

(What two solids are being added together?)

• 4155.27 m³

• 1038.82 m³

• 804.24 m³

• 1005.31 m³

Farmer Fred has a silo that looks like the one in the picture. The cylinder part is 20 feet tall with a radius of 6 feet. What is the volume of the entire silo? Round to the nearest whole number.

• 3167 ft³

• 2337 ft³

• 2413 ft³

• 2714 ft³