Answer:
C - 8
Step-by-step explanation:
4 cm, if you subtract 9 from 13 you get four.
α + β = 180°
∠BFE and ∠FBC
∠CEF and ∠BCE
351π cm^2.
Area of shaded part = area of the large circle - area os small circle
= π * (13+7)^2 - π * 7^2
= 400π - 49π
= 351π.
