A triangle is placed in a semicircle with a radius of 2mm what is the area of the shaded region use the value 3.14 and do not round the number
1) with green checkmarks the segments, the area of which (S) I am looking for
2) S of semicircle = SsS_sSs
S = SsS_sSs - S△(ABC)S\vartriangle(ABC)S△(ABC)
Ss=12π∗R2=>12∗3.14∗4mm2=6.28mm2S_s = \tfrac{1}{2}\pi*R^2 => \tfrac{1}{2}*3.14*4 mm^2 = 6.28 mm^2Ss=21π∗R2=>21∗3.14∗4mm2=6.28mm2
S△(ABC)=12BO∗AC=12∗2mm∗4mm=4mm2S\vartriangle(ABC) = \tfrac{1}{2} BO*AC = \tfrac{1}{2} *2mm*4mm = 4mm^2S△(ABC)=21BO∗AC=21∗2mm∗4mm=4mm2
S=6.28−4=2.28mm2S = 6.28 - 4 = 2.28 mm^2S=6.28−4=2.28mm2
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