The new roof wil have an area = (scale factor)^2 * ( old roof area) =
(3)^2 * (4.8) =
9 * 4.8 =
43.2 sq ft
[ Think about it like this......each dimension , width and length, is 3 times as large ...so old area = L * W.....and new area =
3L * 3W = 9(L * W) ]
