Calculate the area of rectangle
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Given : Rectangle , arc and semicircle and tangent to semicircle from one vertex of rectangle
To find : Area of rectangle
Solution:
Let say R is Radius of arc in rectangle
& r is the radius of the semicircle
Then sides of rectangle would be R & ( R + r + r)
=> R & (R + 2r)
Area of rectangle = R(R + 2r)
= R² + 2Rr
5 cm is the Tangent to the Semicircle
Distance of point from center = R + r
radius of semicircle = r
=> ( R + r)² = 5² + r²
=> R² + r² + 2Rr = 25 + r²
=> R² + 2Rr = 25
Area of rectangle = R² + 2Rr = 25 cm²
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