Area of the largest circle that can be inscribed in a semicircle of radius ‘r’ units is
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The largest circle that can be inscribed in a semicircle with radius r are we have its diameter = r.
Refer to the above attachment.
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❁❁ Refer To Image First .. ❁❁
From image we can see that, we have a Semi-circle with Diameter CA .
→ Radius of semicircle = CB = BA = BD = Let r units .
Now, Their is a circle with Centre O inside this Semi-circle ,
→ Diameter of Circle = BD = r units .
So,
→ Radius of circle = BO = OD = (r/2) units .
Hence, Area of circle will be = π(radius)² = π(r/2)² = ( πr²/4) units².
So, Area of Largest circle inside a semi-circle of radius r is ( πr²/4) units².
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