aza2007
4, 75% = 3/4 maka Volumenya adalah V = (phi x r x r x t) - (3/4 x phi x r x r xt) = (22/7 x 70 x 70 x 90) - (3/4 x 22/7 x 70 x 70 x 90) = (22 x 10 x 6300) - (3/4 x 22 x 10 x 6300) = (220 x 6300) - (3/4 x 220 x 6300) = 1.386.000 cm3 - (165 x 6300) = 1.360.000 cm3 - 1.051.500 cm3 = 334.500 cm3 = 334,5 liter
5, Lp = 2 x (p x l + l x t + p x t) 2352 cm² = 2 x (32 x 18 + 18 x t + 32 x t) 2352 cm² = 2 x (576 + 576 + 2t) 2352 cm² = 2 x 1152 + 2t 2t = 2352 ÷ 2 - 1152 2t = 1176 - 1152 = 24 cm t = 24 ÷ 2 = 12 cm
maka Volumenya adalah
V = (phi x r x r x t) - (3/4 x phi x r x r xt)
= (22/7 x 70 x 70 x 90) - (3/4 x 22/7 x 70 x 70 x 90)
= (22 x 10 x 6300) - (3/4 x 22 x 10 x 6300)
= (220 x 6300) - (3/4 x 220 x 6300)
= 1.386.000 cm3 - (165 x 6300)
= 1.360.000 cm3 - 1.051.500 cm3
= 334.500 cm3 = 334,5 liter
5, Lp = 2 x (p x l + l x t + p x t)
2352 cm² = 2 x (32 x 18 + 18 x t + 32 x t)
2352 cm² = 2 x (576 + 576 + 2t)
2352 cm² = 2 x 1152 + 2t
2t = 2352 ÷ 2 - 1152
2t = 1176 - 1152 = 24 cm
t = 24 ÷ 2 = 12 cm
maaf kalau salah