Compute the volume and surface area of a right circular cone:
Compute the volume and surface area of a right circular cone along with r = 3", h = 4", and l = 5". Be sure to involve the units in your answer.
Solution:
V = 1/3 πr2h SA = πr2 + πrl
V = 1/3 π (3)(3)(4) SA = π(3)(3) + π(3)(5)
V = 1.05(36) SA = π(9) + π(15)
V = 37.8 cubic inches SA = 28.3 + 47.1
SA = 528/7 = 75-3/7 square inches