A rectangle half as wide

Question

as it is long has an area of 98 cm squared. determine the perimeter of the rectangle?

Answer 1

let "l" and "w" are the length and width of the rectangle.

Width w = l/2

Area of rectangle = l * w

98 = l * l/2

l^2 = 196

l = 14

width w = l/2 = 14/2 = 7

Perimeter = 2(l+w) = 2 (14+7) = 2 * 21 = 42 cm