SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Mensuration Solid Figures
A well of radius 2.8 m is dug up to a depth of 15 m. The earth which is taken out is used to make a platform which is 7 m wide around the well in a circular shape. Find the height of the platform?
1
1.33 m
2
2.7 m
3
4.3 m
4
0.9 m