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tinggi tabung = 20
s= 25
s^2= r^2 + t^2
25^2 = 7^2 + t^2
625 = 49 + t^2
t^2 = 625 - 49
t^2 = 576
t = 24
volume kerucut = 1/3 π r^2 t
= 1/3 x 22/7 x 7 x 7 x 24
= 1232
v tabung = π r^2 t
= 22/7 x 7 x 7 x 20
= 3080
volume = volume kerucut + volume tabung
= 1232 + 3080
= 4312 cm^3