Thread: math help

Archie is making a circular garden.
so is Luanne,but the radius of her garden is twice as long as the radius of archie's garden.tell how the area of Luanne's garden will compare to that of archie's garden,and prove it.

Area of archies garden is pi*r^2
Leannes garden is has twice the radius so the area of her garden is pi*(2r)^2 or 4*pi*r^2. So Leannes garden is 4 times larger than archies.