Question

A room is 17 m long and 10 m wide. A square carpet of side 10 m is to be laid on its floor. Find the area of the floor which will remain bare.

Answer 1

Area of the floor of room = 17×10=
${170m}^{2}$
Area of carpet =10×10=
$100 {m}^{2}$
Area remain bare =Area of floor - Area of carpet
=170-100
=
$70 {m}^{2}$

Answer 2

Area of the floor of room = 17×10=170m​²​​ 
Area of carpet =10×10=100m​²​​ 
Area remaining =Area of floor - Area of carpet
=170-100
=70m​²