Find the value of mn if ab= 9cm, bc= 7.2cm, and LM= 12cm

Question

asked Sep 11, 2021 90.2k views

1 Answer

Mark Toman · Answer 1 · 2021-09-17T15:35:01+0000

Answer:

9.6 cm

Explanation:

Since the shapes are similar, we can write a proportion. Let x be the length of MN.

9/12 = 7.2/x Write a proportion.

9x = 12(7.2) Use cross products.

9x = 86.4 Multiply.

x = 9.6 Divide both sides by 9.

Side MN is 9.6 cm.