【Haichuan Teahouse】Brain Series: Cut out the semicircle inside the triangle
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As shown in the figure, in a right triangle, the right-angled sides are 6cm and 8cm respectively. Find the area of the shaded part.
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Area of Semicircle (24/7)* (24/7) * 3.14/2≈18.5 Triangle area 6 * 8/2=24 The shadow area is approximately equal to 5.5
It can be solved by using similar triangles to find the radius.