The sphere below has a radius of 2.5 inches and an approximate volume of 65.42 cubic inches.

Note: Figure is not drawn to scale.

A second sphere has twice the radius of the given sphere. A third sphere has a diameter that is three-fourths of the diameter of the given sphere.

Complete the statements below. Use 3.14 for .

The radius of the second sphere is
inches.

The approximate volume of the second sphere to two decimal places is
cubic inches.

The radius of the third sphere is
inches.

The approximate volume of the third sphere to two decimal places is
cubic inches.