Question

a rectangle has a width of 5 cm and an area of 45cm^2. what is its perimeter?

need explanation​

Answer 1

P = 2 w + 2 A/w

= 2 × 5 + 2× 45/5

= 10 + 2× 9

= 10 + 18

= 28 cm^2

I hope this will help you