Problema Solution
The length of a rectangle is twice as long as its width. Its perimeter is 36cm. What is its area?
Answer provided by our tutors
Let 'l' and 'w' stand for length and width. We can write:
l=2w
2l+2w=36
Using Algebrator to solve for 'l' and 'w', we get:
l=12cm
w=6cm
Area:
area=lw=12(6)=72cm^2