Question

15. A well is 20 m deep and it has diameter 7m. The earth which is so dug
Ct is spread evenly on a rectangular plot 22mn long and 14 m broad. What is
the height of platform formed?​

Answer 1

$\huge{\orange{\underline{\red{\mathscr{Answer:-}}}}}$

Lets 1st find the volume of the mud dug out. Formula used will be r²h.

Hence we have volume = 22/7 × (7/2)² × 20

We also have the volume of the cuboid at L x B x H

Here L = 22 and B = 14, we need to find H

Since the two volumes are equal, we have

22 x 14 x H = 22/7 × (7/2)² × 20

Hence we get the Height of the platform as 2.5m.

$\huge{\green{\underline{\orange {\mathscr{THANKS.}}}}}$