Question

A room has a floor area of 15 m by 10 m. A square carpet of side 7 m is laid on the floor. how much of the floor area is not carpeted?

Answer 1

area is 15*10=150
square carpet = 7 m
area - sq.carpet = 150-7
=143 m

Answer 2

Area of the floor = 15 x 10 = 150m²

Area of the carpet = 7 x 7 = 49m²

Area not carpeted = 150 - 49 = 10m²

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Answer: 10m²