manufacturing


 

 

 

 

Engineering, Design, and Manufacturing Knowledge

Area formula

Formula
Shape
A = Pi r2
circle
A= Pi /4 (D2-d2)
hollow
A=Pi x r2 x Q / 360
sector
A=Pi x r2 xQ /360 - S(r-h)/2
segment
A=Pi/4 xDxd
ellipse