Jawabanmu

2014-09-13T20:26:45+07:00
Diket. V= 1437 1/3
phi = 22/7
Dit. r?

V = 4 phi r^3
1437 1/3 = 4 × 22/7 × r^3
4312 = 4 × 22/7 × r^3
30184 = 88r^3
r^3 = 343 -----> r = 7

sorry klo kurang jelas, ya?
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