Axial cut of a rectangle

Calculate the volume and surface of the cylinder whose axial cut is a rectangle 15 cm wide with a diagonal of 25 cm long.

Correct result:

V =  3534.2917 cm3
S =  1295.907 cm2

Solution:

D=15 cm u=25 cm  r=D/2=15/2=152=7.5 cm h=u2D2=252152=20 cm  S1=π r2=3.1416 7.52176.7146 cm2 V=S1 h=176.7146 20=3534.2917 cm3
S=2π r h+2 S1=2 3.1416 7.5 20+2 176.7146=1295.907 cm2



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