Question

A rectangle has the area equal to that of a square of side 80 cm. If the length of the rectangle is 160 cm, its breadth is 1) 60 cm 2) 40 cm 3) 20 cm 4) 30 cm

Answer 1

Area of squre=80x80=6400,which is equal to area of rectangle...
Area of rectangle is 160xbreadth=6400(as given)
so now breadth=6400/160
so the answer be 40 cm

Answer 2

Area of square is 80 x 80 = 6400
also area of rectangle = length x breadth
given: area of square = area of rectangle
=> 6400 = area of rectangle
=>6400 = length x breadth
=160 x breadth
=> 6400/160 = breadth
=> 40 = breadth