Question

Vineet wants to Polish the floor of a room which is 140 cm long and 120 cm wide. The charges for polishing thefloor is 52 per square metre. What will be the cost of polishing the floor of the room?

Answer 1

Answer:

176.8

Step-by-step explanation:

Area = (140/100)² + (120/100)²

Area = 1.4² + 1.2²

Area = 1.96 + 1.44

Area = 3.4

Cost = 52 * 3.4 =  176.8

Answer 2

Here is your answer
As 1 cm = 1/100 m

Length = 140 cm
= 140/100
= 1.4 m

Breadth = 120 cm
= 120/100
= 1.2 m

Area of floor = L × B
= 1.4 × 1.2
= 1.68 sq. m

Rate of polishing the floor is Rs 50/sq m

Cost of polishing the floor is
= 50 × 1.68
= Rs 84

Hope it helps you