engineering recuitment UPSSSC Assistant Boring Technician 2022 Mock Test Quantitative Aptitude Mensuration Solid Figures
A well of depth 21 m and radius 3 meter is dug and the earth which is taken out is in a shape of a conical heap of height 3 meter. Find the radius of the heap.
1
9√7 m
2
√21 m
3
3√21 m
4
3√7 m