 
The three sides of a right triangle 
That's the one on the right.
are proportional to another right triangle 
whose sides measure 3 cm, 4 cm, and 5 cm. 
That's the one on the left.
The triangle on the right has sides whose lengths 
are some constant k times the lengths of the sides
of the triangle on the left. 
Find the perimeter of the right triangle if 
its area is 96 cm^2.
The formula for the area of a triangle is


 For the larger triangle on the right, the area
is given as 96 cm², the base is 3k and the height
is 4k, so we substitute:
For the larger triangle on the right, the area
is given as 96 cm², the base is 3k and the height
is 4k, so we substitute:


 


 


 


 


 


 The perimeter is the sum of the three sides.
The perimeter is the sum of the three sides.


 


 


 


 Edwin
Edwin