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Shrinesh wants to renovate the floor of his office which is made of 2,800 marble tiles. Each tile is 3 cm long and 5 cm wide. Calculate the cost of polishing the floor at the rate of Rs 25 per sqm.
1. Rs. 100
2. Rs. 115
3. Rs. 125
4. Rs. 105

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Correct Answer - Option 4 : Rs. 105

Given:

Shrinesh office floor made up of 2800 marbles

Length of floor = 3 cm = 0.03 m

Breadth of floor = 5 cm = 0.05 m

Formula used:

Area of rectangle = length × breadth

Calculation:

Area of rectangle = (0.03 × 0.05) m2

⇒ 0.0015 m2

Now,

⇒ (0.0015 × 2800) m2

⇒ 4.2 m2

Cost of polishing the floor = Rs. (25 × 4.2)

⇒ Rs. 105

∴ The cost of polishing the floor is Rs. 105

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