Q. 10

# Radius of a secto

Answer :

Radius of circle, r = 7cm

(l) Angle subtended by arc, θ = 30°

As we know,  Al = 12. 83 sq. cm

(ll) Angle subtended by arc, θ = 210°

Similarly,  All = 89.83 sq. cm

(lll) Angle subtended by arc, θ = (3× 90)° = 270°

Similarly,  Alll = 115.5 sq. cm

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