Question

25 points!!!!!!!!!!!!!!!!!!

Answer 1

Answer:

14.2

Step-by-step explanation:

Hi there!

We are given a 30-60-90 triangle

The triangle is a right triangle, since one of the angles measures 90 degrees

We are also given that the length of the hypotenuse (the side OPPOSITE from the right angle) is 6

We want to find the perimeter of the triangle

There are special formulas to find the other sides of the triangle, if we know that:

a. the triangle is a right triangle

b. we know the length of the hypotenuse

These two formulas are:

• If the length of the hypotenuse in a triangle is a, then the length of the side OPPOSITE from the 30 degree angle is $\frac{a}{2}$

• The length of the side OPPOSITE from the 60 degree angle is $\frac{a\sqrt{3} }{2}$

In this problem, we are given that a=6, so that means that in order to find the length of the other sides:

The length of the side opposite from the 30° angle: $\frac{a}{2} = \frac{6}{2} = 3$

The length of the side opposite from the 60° angle: $\frac{a\sqrt{3} }{2} = \frac{6\sqrt{3} }{2} = 3\sqrt{3}$, or about 5.2

Now, to find the perimeter, we add the lengths of these sides together.

6 + 3 + 5.2 = 14.2

Hope this helps!