Question

The perimeter of rectangle is 480cm and its length is 140cm find its area in square meter

Answer 1

1,4m^2

Explanation:

side1x2+side2x2=480cm

side1= 140cm

140x2+side2x2=480 --> 480-140x2=side2x2 --> side2x2=200 --> side2=200/2 --> side2=100cm

A=side1xside2 =140x100=14000cm^2

1cm^2=0,0001m^2

14000cm^2x0,0001= 1,4m^2

I did this quickly so maybe there's a mistake somewhere.