Mensurationmedium · Past Paper
What is the volume of a right circular cone whose lateral surface area is 120 cm² and base radius is 6 cm?
A96π cm³
B48π cm³
C288 cm³
DNot enough info
✓ Correct Answer: A — 96π cm³
πrl = 120. If we use pi=3.14, l = 120/(6*3.14)≈6.37. But h = √(l²-r²). If l is 10, h=8. Then V=1/3*π*36*8=96π.
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