Question 82424

Let x=width
Then 4x=length

Area of a rectangle = Length times Width=4x*x

So:

4x^2=256 divide both sides by 4

x^2=64  take sqrt of both sides

x=+-8 cm discount negative value for x. 

x=8 cm--------------width
4x=4*8=32 cm-----------length

CK

A=8*32=256
256=256


Hope this helps----ptaylor