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v = 1/3 . phi . r^ . t
1232 = 1/3 . 22/7 . r^ . 24
1232 × 21 = 528r^
r^ = 25872/528
r^ = 49
r = 7
a. s^ = t^ + r^
= 24^ + 7^
= 576 + 49
= 625
s = 25
b. d = 2r = 2.7 = 14
c. lp.kerucut = phi.r (r+s)
tinggal dimasukkan saja angka2nya