For an project pedro uses clay to make 4 balls each with a diameter of 4 in. what is the total volume of the 4 balls of clay?

33

100

134

402

Here's the correct answer for k12.

Volume of a ball = 4/3 x PI x r^3

r = half the diameter.

Volume of 1 ball = 4/3 x PI x 2^3 = 33.5 cubic inches.

Multiply the volume of 1 ball by total balls:

33.5 x 4 = 134 cubic inches.