Question

A gas pipe is 18 m long. Find the cost of nickel plating on the outer surface of the
pipe at the rate of Rs. 50 per square meter if its meter is 0.4 m.​

Answer 1

Step-by-step explanation:

So, 

plating required = surface area of the pipe = A = Plating required = 2.2608 meter square. Price per square meter = 50 Rs. So, the price for coating is 50*2.2608 = 113.04 Rs.

Answer 2

Answer:

The price for coating is 50*2.2608 = 113.04 Rs

Step-by-step explanation:

Given pipe diameter is = d = 0.4 m

Lnegth = l = 18 m

So, plating required = surface area of the pipe = A = \pi \frac{d^{2} }{4}*lπ

4

d

2

∗l

Plating required = 2.2608 meter square

Price per square meter = 50 Rs.

So, the price for coating is 50*2.2608 = 113.04 Rs.

The price of coating will be equals to the surface of the produce of the area of the pipe and price per square meter.