The ratio of the side lengths of a quadrilateral is 3:3:5:8, and the perimeter is 380cm. What is the measure of the longest side?

20 cm

160 cm

60 cm

160

Step-by-step explanation:

Add the ratios together to get the sum of them is 19. Since the perimeter is 380, divide 380 by 19 to get 20.

The shortest side is 3 (20) = 60,

the next side is 5 (20) = 100, and

the longest side is 8 (20) = 160