Question

if the perimeter of a rectangle is 32 dm and its width is 7 dm what is its length

Answer 1

Step-by-step explanation:

We know that

Perimeter=2*length+2*width

So,

2 * width=32 - (2*9cm) = 14cm

And therefore

width = 14/2 cm = 7cm

Recalling the definition of area, we know

Area = Length * Width = 9cm * 7cm

= 63cm²