Question

Find the perimeter of ABC

Answer 1

36 ft

Explanation:

• 
  (Given)

• Perimeters and corresponding sides of similar triangles are in proportion

• 
  

• 
  `\implies(P( \triangle ABC))/(12)=(15)/(5)`

• 
  `\implies(P( \triangle ABC))/(12)=3`

• 
  `\implies P( \triangle ABC) =12(3)`

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