Calculate the volume and surface area of a sphere:
Calculate the volume and surface area of a sphere with r = 4". Be sure to include units in your answer.
Solution:
V = 4/3πr^{3} SA = 4 πr^{2}
V = 4/3 π(4)(4)(4) SA = 4 π(4)(4)
V = 4.2(64) SA = 12.6(16)
V = 268.8 cubic inches SA = 201.6 square inches