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9.
Pentagon ABCDE is similar to pentagon RSTUV. The perimeter of pentagon ABCDE is 36.8 centimeters.


What is the length of ST ?
18 cm
25.8 cm
15 cm
19.8 cm

Respuesta :

Answer:

the answer is 18 cm

Step-by-step explanation:

NgShiYin

Answer:

15cm

Step-by-step explanation:

Since BC is like ST but smaller, we have to find the length of BC then find the proportion for ST.

Length of BC = 36.8 - 4.4 - 13.2 - 2.2 - 11

                      = 6

Scale = [tex]\frac{33}{13.2}[/tex]

Length of ST = [tex]\frac{33}{13.2}[/tex] × 6

                      = 15