Question

A square and a rectangle have equal areas. If each side of the square is 18 cm and the width of the rectangle is 12 cm find the length of the rectangle

Answer 1

Area of square = (side)^2
Area of rectangle = length * width

Area of square = 18^2
Area of rectangle = 12 * l

18*18 = 12*l
l = (18 * 18) /12
l = 27

Answer 2

side of square = 18cm,
area of square= side*side
= 18*18
=324cm sq.
according to the question,
area of rec = area of square
area of rec = 324 cm sq.
width of rec= 12cm
length=?
area of rec= length*width
324= length*12
324%12= length
length=27cm