Quadrant II

Calculate the radius of the quadrant, which area is equal to the area of the circle with radius r = 15 cm.

Correct answer:

r2 =  20.5 cm

Step-by-step explanation:

r=41 cm  S1 = S2 4 π r22 = π r2 4 r22 = r2  2 r2 = r  r2=r/2=41/2=20.5 cm



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