Question

Triangle GHI is dilated by a scale factor

of 4 to 7 to create triangle RST. If the
perimeter of triangle RST is 28 cm,
what is the perimeter of triangle GHI?

Answer 1

It would be 49 cm

Explanation:

Knowing the the perimeter of Tri RST is 28 cm and that it is a dilated by a 4:7 Scale Factor from Tri GHI:

(4/7)x = 28cm

(4/7)x (7/4) = 28cm (4/7)

x = 49cm

Hope that helps.