Question

A storage tank consist of a circular cylinder with a hemisphere stuck on either end if the external diameter of a cylinder be 1.4m and its length to be 8m .Find the cost of painting it on the outside at rate

Answer 1

Answer:

ANSWER

We have,

r=0.7m, h=8m

∴ Total surface area = 2πr

2

+2πrh=2πr(r+h)=2×

7

22

×0.7×8.7m

2

Required cost = Rs. {2×

7

22

×0.7×8.7×10}=Rs.382.80