Equilateral triangle v3

Find the area of the colored gray part. An equilateral triangle has a side length of 8 cm. Arc centers are the vertices of a triangle.

Final Answer:

S =  2.5801 cm2

Step-by-step explanation:

a=8 cm r=a/2=8/2=4 cm α=60   A=360α=36060=610.1667 S1=43 a2=43 82=16 3 cm227.7128 cm2 S2=π r2 A=3.1416 42 0.16678.3776 cm2  S=S13 S2=27.71283 8.3776=2.5801 cm2



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Calculation of an equilateral triangle.
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:

arithmeticplanimetricsUnits of physical quantitiesGrade of the word problem

 
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