Question

A heap of rice is in the form of a cone of base diameter 20 m and height
4.2 m. Find the volume of the heap of rice.
How much canvas as cloth is required to just cover the heap?

fassst

Answer 1

Answer:

d=20m

=> r= 20/2 = 10m

Volume of cone= 1/3πr²h

                         = 1/3 x 22/7 x 10 x 10 x 42/10

                         =440m³

For canvas cloth, find the CSA of the cone using πrl formula. But these measurements are not giving an exact value for 'l' (slant height)

Please confirm question and try for Curved surface area!