Question

A cylindrical well is dug out whose diameter is 14 m and height is 20 m is half filled with water inside the well​

Answer 1

Step-by-step explanation:

Correct option is

A

11

We have,

depth (h)=20 m

d=14 m

⇒2r=14 m

⇒r=7 m

Volume of the cylinder =πr

2

h

=

7

22

×7

2

×20

=22×7×20 m

3

Since,

The length of cuboid l=20 m

The breadth of cuboid b=14 m

Let the height of cuboid be

′

x

′

.

So, the volume of the cuboid

=l×b×h

=20×14×x m

3

According to the question,

20×14×x=22×7×20

2×x=22

x=11 m

Hence, this is the answer.