I need some help with this!

Step-by-step explanation:

The following formula can be used to find the volume of a sphere,

Where (r) represents the radius of the sphere or the distance from the center of the sphere to its outer edge. The term () represents the numerical constant (). In this problem, one is given that the radius of the sphere is (1). Substitute this value into the formula and simplify to solve,

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: