Question

(17) A cylindrical shaped well of depth 20 m and diameter 14 m is dug. The dug out soil is evenly spread to form a cuboid platform with base dimension 20 m x 14 m. Find the height of the platforms

Answer 1

volume will be conserved
volume of well=volume of cuboid
$\pi {7}^{2} 20 = 20 \times 14 \times h \\ \pi \times 7 \times 1 = 2h \\ h = \frac{\pi \times 7}{2} \\ h = 11$
height =11m

Answer 2

Answer:

11m

Step-by-step explanation:

Given:

Cylinder Cuboid

H=20m L=20m

R=7m B=14m

h=?

Volume of cylinder= Volume of Cuboid

πR^2H =L*B*h

h=22*7*7*20/20*14*7

=11m