TristanBenzAlexander
18) Cari dulu r nya. 4/3 x 3,14 x r³ = 113.040 3,14 x r³ = 113.040 x 3/4 3,14 x r³ = 84.780 r³ = 84.780 / 3,14 r³ = 27.000 r = 30 cm
Terus: 4 x 3,14 x 30 x 30 = 11.304 cm² (c)
19) Cari r nya:
4 x 22/7 x r² = 154 cm² 88/7r²=154cm² r² = 154 x 7/88 r²=12,25 r=3,5
Vol: 4/3 x 22/7 x 3,5 x 3,5 x 3,5 = 179,67 cm³(b)
Kalau salah maaf
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myn13
Aku cuma bisa bantu nomer satu 1. dik v = 113.040 cm3 phi = 3,14 dit luaspermuk? jawab v = 4/3.phi.r3 113.040 = 4/3.3,14.r3 113.040 = 12,56/3.r3 339.120 = 12,56.r3 339.120/12,56 = r3 27.000 = r3 r = 30 L = 4.phi.r2 = 4.3,14.30.30 =11.304 cm2
4/3 x 3,14 x r³ = 113.040
3,14 x r³ = 113.040 x 3/4
3,14 x r³ = 84.780
r³ = 84.780 / 3,14
r³ = 27.000
r = 30 cm
Terus:
4 x 3,14 x 30 x 30 = 11.304 cm² (c)
19) Cari r nya:
4 x 22/7 x r² = 154 cm²
88/7r²=154cm²
r² = 154 x 7/88
r²=12,25
r=3,5
Vol: 4/3 x 22/7 x 3,5 x 3,5 x 3,5 = 179,67 cm³(b)
Kalau salah maaf
1. dik v = 113.040 cm3
phi = 3,14
dit luaspermuk?
jawab
v = 4/3.phi.r3
113.040 = 4/3.3,14.r3
113.040 = 12,56/3.r3
339.120 = 12,56.r3
339.120/12,56 = r3
27.000 = r3
r = 30
L = 4.phi.r2
= 4.3,14.30.30
=11.304 cm2