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प्रश्न
A floor is 4.5 m long and 3.6 m wide. A 6 cm square tile costs ₹ 23.25. What will be the cost to cover the floor with these tiles?
उत्तर
Length of the floor = 4.5 m
= (4.5 × 100) cm
= 450 cm
Width of the floor – 3.6 m – (3.6 × 100) cm = 360 cm
∴ Area of the floor – (450 × 360) cm2 = 162000 cm2
Side of a square tile = 6 cm
∴ Area of one square tile = (6 × 6) cm2 = 36 cm2
Number of tiles required to cover the floor
= `"Area of floor"/"Area of one tile"`
= `162000/36`
= 4500
Now, cost of one tile = ₹ 23.25
∴ Cost of 4500 tiles = ₹ (23.25 × 4500)
= ₹ 104625
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