Answer:
52pi
Step-by-step explanation:
You need the area of the large grey circle, minus the white circle, plus the small grey
Large grey = 8^2 * pi = 64pi
White = 4^2 * pi = 16pi
Small grey = 2^2 * pi = 4pi
64pi - 16pi = 48pi, 48pi + 4pi = 52pi
82.5 km
Given:
Cross-multiply.
2x = 11(15)
Divide both sides by 2 and solve for x.
x = 82.5 km
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compostion
comPOSTION
13.08 ≈ y