48 / 48 hrs Completed, Read watch every Single thing and answer it in comments. 48 / 48 = ?
1 answer:
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First, pretend the semicircle isn't cut out of the triangle and find the area of that equilateral triangle using the equation:
where l=the length of one side of the triangle (2+2+4=8mm).
Then find the area of the semicircle using the equation for the area of a circle:
where r=the radius of the circle (4/2=2mm) and then dividing the area you get by 2 to get the area of the semicircle.
Finally subtract the area you got for semicircle from the area of the entire equilateral triangle.
where l=the length of one side of the triangle (2+2+4=8mm).
Then find the area of the semicircle using the equation for the area of a circle:
where r=the radius of the circle (4/2=2mm) and then dividing the area you get by 2 to get the area of the semicircle.
Finally subtract the area you got for semicircle from the area of the entire equilateral triangle.