are of a circle segment

ladil123

Hello!



How do i get the area of this segment on the top of the circle?

w=44.5 mm
h=10.35 mm
r=34.9 mm


I have found some formulas for calculating the area, but it seems like I need some angle.. ? What If i dont know the angle...?

A=0.5*r*(b-w)+w*h

b is the arc length, b = r*angle*pi/180

How do I use this angle?

I know that the answer should be approx 696 mm2 from a computer program, but I cant do it analytically...


Need help

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tiny-tim

Hello ladil123!

Subtract the area of the triangle from the area of the sector.

ladil123

Sorry, im too slow to get it...

tiny-tim

Add the segment to the obvious triangle, and you get a "piece of pie".