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Basile [38]
3 years ago
9

What length is the shorter leg of a right triangle that has hypotenuse 50 in long and its perimeter is 112 inches?

Mathematics
1 answer:
Snezhnost [94]3 years ago
8 0

The perimeter of a triangle is given by:

Perimeter = sum of three sides

We are given perimeter = 112 in.

Hypotenuse = 50 in.

Let us say the other two sides are a and b.

So , we have

a+b+50 =112

a+b =62

a =62-b...............(2)

In a right angle triangle we can apply pythagorean theorem,

a² + b² = c²

here c is hypotenuse which is 50 in.

a²+b² = 50²

a²+b² = 2500............(2)

Plugging the value of a from equation (1) in (2)

(62-b)^{2}+b^{2}=2500

3844-124b+(b)^{2}+b^{2}=2500

2(b)^{2}-124b+1344=0

Factorising ,

(b-14)(b-48)=0

So we have two values of b

b=14 and b=48

If b=14, a=48

If b=48, a=14

Answer: The shorter leg will  be 14 inches.

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