Question

A path 2m wide surrounds a circular pond of diameter 40m . How many cubic meters of gravels are required to gravel the paTh to a depth of 7cm

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.

Step-by-step explanation:

Since we have given that

Diameter of circular pond = 40 m

Radius of circular pond = 20 m

Width of path = 2 m

So, Radius of outer path = 20+2 = 22 m

Depth = 7 cm

So, Volume of gravels would be

$\pi (R^2-r^)h\\\\=\dfrac{22}{7}\times (22^2-20^2)\times 0.7\\\\=\dfrac{22}{7}\times 42\times 2\times 0.7\\\\=184.8\ m^3$

Hence, 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.