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Volume tabung= 785cm3
t tabung= 10cm
r tabung=....?
Jawab:
Volume tabung= L alas x t
=
785 = 3,14 x x 10
785 = 31,4 x
=
= 25
= 5cm (A.)
785 = 3,14 × r × r × 10
785 × 10 = 314 r kuadrat
7850 = 314 r kuadrat
r kuadrat = 7850 : 314 = 25
r = √25 = 5 cm
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