مساحة شبه المنحرف الرمادى

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D1/5=5/10

D1=5/2

D2/(5/2)=2/5

D2=1

المساحة المطلوبة=1/2(1+2,5)×3=21/4

 

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PURPLE AREA = ???

H=12*3

H=36

Sin 60=36/L

L=36/sin60

L=41.57

Area =(36×41.57)/2-(144×3.14)

Area =748.26-452.16

Area =296.1u2

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