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vol tabung =22/7 x (14)² x 25
=22x2x14x25 = 15400 cm^3
b.
d =40 , t = 12
vol tabung = 1/4x3.14xd²xt
= 1/4x3,14x(40)²x12
=1/4x3,14x1600x12
=15072 cm^3