A floor is made of a 3 m × 3 m part and a 3 m × 1 m 50 cm part. How many square tiles of side 30 cm will cover it?

Question

Accepted Answer

150. In cm: 300 × 300 = 90,000 and 300 × 150 = 45,000, total 1,35,000 sq cm. One tile = 30 × 30 = 900 sq cm. Tiles = 1,35,000 ÷ 900 = 150. (Check: 10 × 10 = 100 tiles + 10 × 5 = 50 tiles.)

A floor is made of a 3 m × 3 m part and a 3 m × 1 m 50 cm part. How many square tiles of side 30 cm will cover it?

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