Question

ii) A table top is 1.5m long 2.1m wide. Find the cost of polishing it at the rate of Rs.5 per sq meter

Answer 1

Answer:

Step1. Given,

Length of table top, l = 1.5 m

Width, b = 2.1 m

Find the cost of polishing at Rs. 5 per sq metre.

Step2. The shape of table top is rectangular, then area of rectangle = Length × Width

= 1.5 × 2.1 = 3.15 sq metre.

Step3. Now,

Cost of 1 sq metre = 5

∴ Cost of 3.15 sq metre = 3.15 × 5 = Rs. 15.75

Step4. Hence, the cost of polishing is Rs. 15.75