Question

A storage tank consists of a circular
cylinder, with a hemisphere adjoined
on either end of the external diameter
the cylinder be 1.4m and its length be 5m
what will the cost of painting it on the
outsill at the rate of rs 10 per sq.m?
of​

Answer 1

Answer:

Step-by-step explanation:

We have,

r= 0.7 m, h=8 m

∴ 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

I hope it helps you