# What is the cost of painting of wall?

The length and width of a rectangular wall are 30 metre and 24 metre respectively What is the cost of painting the wall if the rate of painting is Rs. 28 per square metre?

- Rs. 19640
- Rs. 20860
- Rs. 20160
- Rs. 19840

**Answer: (3) Rs. 20160**

**Solution:-**

The length and width of a rectangular wall = 30 meters and 24 meters

Then, area of rectangular wall = 30 x 24

= 720 m^2

The rate of painting is Rs.28 per square metre.

Therefore, cost of painting of wall = 720 x 28

= Rs. 20160

Hence, the correct answer is option (3) Rs. 20160.