Question

Find the perimeter of a rectangle if
the area is 45 cm2 and the base is 7.5 cm

Answer 1

27 cm.

Explanation:

Area = base * height

45 = 7.5 * h

h = 45/7.5

= 6 cm.

So the perimeter

= 2(base + h)

= 2(7.5 + 6)

= 27 cm.