Answer:
Arc = 20 / 3°
Step-by-step explanation:
Say the angle is = x
The sector = πr^2 / x
Sector = 100π / x
15π = 100π / x
15πx = 100π
x = 20 / 3
Arc is = to the central angle
Your final answer is $528.92
Area = 30
Add the two sides
8 + 4 = 12
Multiply that number by the height
12 × 5 = 60
Divide that number by 2
60 ÷ 2 = 30
