r=40cm
t=42cm
Maka luas permukaan tanpa tutup
Lp=πr²+2πrt
Lp=3,14×40×40+2×22/7×40×42
Lp=5.024+2×22×40×6
Lp=5.024+10.560
Lp=15.584cm²
.
Volume air
V=¼×vtabunf
V=¼×22/7×40×40×42
V=22×10×40×6
V=52.800cm³=52,8liter
Volume bak mandi
=4×Volume air
=4×52.800
=211.200cm³
Volume total=211,2Liter
Volume total-Volume air skrg
=211,2-52,8
=158,4
Waktu yg dibutuhkan dgn debit 1,08liter/menit
=158,4÷1,08
=146⅔menit(dalam menit)
=2jam 26menit 40detik
Semoga bermanfaat
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Verified answer
Penyelesaian
r=40cm
t=42cm
Maka luas permukaan tanpa tutup
Lp=πr²+2πrt
Lp=3,14×40×40+2×22/7×40×42
Lp=5.024+2×22×40×6
Lp=5.024+10.560
Lp=15.584cm²
.
Volume air
V=¼×vtabunf
V=¼×22/7×40×40×42
V=22×10×40×6
V=52.800cm³=52,8liter
.
Volume bak mandi
=4×Volume air
=4×52.800
=211.200cm³
Volume total=211,2Liter
Volume total-Volume air skrg
=211,2-52,8
=158,4
Waktu yg dibutuhkan dgn debit 1,08liter/menit
=158,4÷1,08
=146⅔menit(dalam menit)
=2jam 26menit 40detik
Semoga bermanfaat