Question

The length and the width of a rectangle are both doubled. What is the ratio of the area of the larger rectangle to the area of the smaller rectangle?

I think it is 2:1. Am I right? If not, what is the ratio?

Answer 1

A=L*W
A=(21)*(2w)=4*L*W
you are comparing 4lw to 1lw
the ratio is 4 to 1 or 4:1 or 4/1

Answer 2

Write it out like so..
Small
A = lw
Large
A = (2l)(2w)
A = 4(lw)
Ratio is 4:1