Question

Sally uses a piece of wire 60cm long to form a rectangle. Thel ength of the rectangle is 5cm longer than its breadth. What is the length of the rectangle.

Answer 1

Answer:

Perimeter of rectangle = 60 cm

2 ( L+ B ) = 60cm

B =5

Therefore, L= x + 5

2 ( x + 5 +x) =60

2 (2x +5) = 60

2x + 5 = 30

x = ( 30-5) / 2

x = 12.5

Length = 12.5 + 5 => 17.5 cm