Question

2 similar parallelograms have areas of 18cm squared and 32 in squared. Find the ratio of their perimeters

Answer 1

There is a simple rule for scaling similar figures

if the linear scale factor is n
then the area scale factor is n^2
and the volume scale factor is n^3

In this case you know the ratio of the AREA (n^2) so the linear ratio is the squareroot of the area ratio.

(Perimeter is a linear measure....)

Answer 2

hint:
ALSO note that 1"=2.54 (exactly) cm.

Answer 3

@justin01
Just double check that you typed correctly - are the 2 areas in different units?

If so then there is the additional conversion as given above - BUT remember there are 2.54^2 cm^2 in in^2