JJ.30 Partition of a circle

A figure is a circle with a radius of 3 cm and AB is a diameter of the circle.

All ● in a figure is 15 degrees.

Pi is assumed to be 3.14. 　

(1) Find the sum of the area of the slash portion of P and Q.

(2) Find the area of the slash portion of Q.


















Answer
(1) 11.565 cm2
(2) 6.96 cm2

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