Question

Polygon r and polygon s are similar. the perimeter of polygon r is 72 cm, and the perimeter of polygon s is 36 cm. if one side of polygon s is 6 cm, what is the length of the corresponding side in polygon r?

A. 3 cm
B. 12 cm
C. 36 cm
D.6 cm

Answer 1

Perimeter r / perimeter s = side r/ side s

Perimeter r = 72 cm
Perimeter s = 36 cm
Side r = ???
Side s = 6 cm

72/36 = side_r/ 6 Cross multiply
72 * 6 = 36 * side_r
432 = 36 side_r Divide by 36
432 / 36 = side_r
12 = side_r