Answer = 4
10^2 = 100
8^2 = 64
100 + 64 = 164
180 - 164 = 16
Square root of 16 = 4
-0.65625 or -21/32 should be your answer just cross multiply
Circumference: 18.84 m
Area: 28.26
Explanation
For circumference, use the formula *d, where d=the diameter(the radius times 2).
For area, use the formula , where r=the radius. Make sure to square the radius first before multiplying by pi!
A good way to remember these formulas is Cherry(circumference) Pi() is Delicious(diameter) and Apple(area) ("are too")
Add all expenses together and then multiply the result by 12. Then subtract his income from it.
The center of the circle is (0,-4) and the radius is 8 because the center comes from the (x-_) and (y-_) and the radius is square root the =_