Jawaban:
28. Dik: V = 192cm²
a = 8 & 6cm
t.....?
V = ⅓ . La . t
192 = ⅓ . (s.s) . t
192 = ⅓ . (8.6) . t
192 = ⅓ . (48) . t
192 = 16 . t
t = 192 ÷ 16
t = 12cm (C.)
29. Dik: t = 6cm
d = 7cm
V.....?
r = d ÷ 2 = 7 ÷ 2 = 3,5
V = ⅓ . π . r² . t
V = ⅓ . 22/7 . 3,5² . 6
V = ⅓ . 22/7 . 12,25 . 6
V = ⅓ . 22/7 . 73,5
V = ⅓ . 231
V = 77cm³
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Jawaban:
28. Dik: V = 192cm²
a = 8 & 6cm
t.....?
V = ⅓ . La . t
192 = ⅓ . (s.s) . t
192 = ⅓ . (8.6) . t
192 = ⅓ . (48) . t
192 = 16 . t
t = 192 ÷ 16
t = 12cm (C.)
29. Dik: t = 6cm
d = 7cm
V.....?
r = d ÷ 2 = 7 ÷ 2 = 3,5
V = ⅓ . π . r² . t
V = ⅓ . 22/7 . 3,5² . 6
V = ⅓ . 22/7 . 12,25 . 6
V = ⅓ . 22/7 . 73,5
V = ⅓ . 231
V = 77cm³