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Q.

ABC is an equilateral triangle. The area of the shaded region if the radius of each of the circle is 1 cm, is
MCQ Questions for Class 10 Maths Areas Related to Circles with Answers 10

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a

3-π cm2

b

3-π2 cm2

c

3-π4 cm2

d

2-π3 cm2

answer is C.

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Detailed Solution

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The given triangle is an equilateral triangle with its edge length equal to 2 times the Radius of the circle.

2×1cm

= 2 cm

Area of triangle = 34 ×  (edge length)²

=34 × 22 

=3  

Area of one of the sectors = θ360o × π R²

= 60360 × π × (1)2

= π6 cm²

Area of 3 such sectors = 3  × π6  cm²

= π2  cm²

Area of shaded region = Area of the triangle - Area of 3 sectors

=3-π2 cm²

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