Question

the area of a rectangle is 1936 square km if the length of the rectangle is 4 times its breadth find the dimension of the rectangle

Answer 1

dimensions are a & b
$so \: b = 4a \\ a \times b = 1936 \\ or \: \: \: 4a \: \times a = 1936 \\ or \: {a}^{2} = 484 \\ so \: a = 22 \: and \: b = 88$