Question

The outer diameter of a pipe is 1m and it is 21m long, Find:
(a) the outer curved surface area of the pipe
(b) the cost of painting the outer surface of the pipe at the rate of Rs 25 per m^2.​

Answer 1

Answer:

the curved surface area of circle =π*d

Step-by-step explanation:

so ,22/7*1=22/7

cost =22/7*25

Answer 2

Answer:

(a) curved surface area of pipe= 66m²

(b) cost of painting=1650Rs