Question

A door is 2.6m by 1.1m. Find the cost of painting both sides of the door at the rate of rs.20 per square metre​

Answer 1

Answer:

Area of rectangle = 2.6 m x 1.1 m

Area of rectangle = 2.86 m^2

Area of door from both sides = 2 x 2.86 m^2

Area of door from both sides = 5.72 m^2

In the question it is given that the cost of painting both sides of the door at the rate of rs 20 per square metre.

Here, area of the region which is to be painted is 5.72 m^2

∴ Cost of painting both sides of the door at the rate of Rs 20 per m^2 = Rs 20 m^2 x 5.72 m^2

Cost of painting both sides of the door at the rate of Rs 20 per m^2 = Rs 114.4

Thanks