Circumference 2 x (22/7) x r = 66 gives radius r = 21/2 cm. The area of the quadrant is (1/4) x π x r² = (1/4) x (22/7) x (21/2)² = 693/8 = 86.625 cm².
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Circumference 2 x (22/7) x r = 66 gives radius r = 21/2 cm. The area of the quadrant is (1/4) x π x r² = (1/4) x (22/7) x (21/2)² = 693/8 = 86.625 cm².