Question

The perimetre of a rectangle is 38cm length is 12.5, What is the Area?...

Answer 1

A=81.25cm,B=6.5cm

Explanation:

P=38cm

L=12.5cm

B=?

P=2(L+B)

P=2L+2B

38=2(12.5)+2B

38=25+2B

C.L.T

2B=38-25

2B=13

divide both sides by 2

B=6.5cm

therefore

A=?

L=12.5cm

B=6.5cm

so,

A=12.5cm×6.5cm

A=12.5×6.5 ×cm×cm

A=81.25×cm²

A=81.25cm²