Answer:

Step-by-step explanation:
we know that
The area of the shaded region is equal to the area of triangle plus the area of semicircle
so

we have

Find the height of the right triangle applying the Pythagorean Theorem


The radius of the semicircle is half the height of triangle

substitute in the formula


Answer:
1075.25
Step-by-step explanation:
subtract the 15 percent using freindly percents
The equation of a circle with center
and radius
is

In your case,

Plug these values into the generic formula and you'll get your equation.
First , in order to find the answer you need to add the add the numerators which are 5 and 2 = 7 and then you need to find a common denominator.