Question

Find the perimeter of ABC

Answer 1

Answer:

36 ft

Step-by-step explanation:

• $\triangle ABC\sim\triangle DEF$ (Given)

• Perimeters and corresponding sides of similar triangles are in proportion

• $\implies\frac{P( \triangle ABC)}{P(\triangle DEF)}=\frac{BC}{EF}$

• $\implies\frac{P( \triangle ABC)}{12}=\frac{15}{5}$

• $\implies\frac{P( \triangle ABC)}{12}=3$

• $\implies P( \triangle ABC) =12(3)$

• $\implies P( \triangle ABC) =36 \: ft$