Question

Tolong di jawaab ya pke cara plissss yg lnkp ya caranya plisss

Answer 1

1.B
2.D
3.A
4.B
5.A
6.A
7.D

Answer 2

1) vol = 785 ltr=785.000 cm³
r = 50cm
vol = 4/3×phi×r²×t
785.000 = 4/3×3,14×50²×t
t = 785.000 ÷ 10466,7
t = 75cm
Lp = La + Ls
=(3,14×50×50)+(3,14×100×75)
=7850 + 23550
= 31.400 cm²
2) r = 4cm
t = 12cm
vol = 1/3 × 3,14×4²×12
= 200,96 cm³
3) vol = 36 phi m³
4/3 phi r³ = 36 phi m³
r³ = (36×3):4
r³ = 27 ~ r = ³√27 = 3m
Lp = 4 phi × d
= 4 phi × 6
= 24 phi m²
4) vol = 588,75 mm³
r = 7,5 mm
vol = 1/3 × 3,14 × 7,5² × t
588,75 = 58,875 t
t = 588,75 : 58,875
t = 10mm
5) vol = 288phi cm³
vol = 4/3 × phi × r³
288 phi = 4/3 phi r³
r³ = (288 × 3) : 4
r = √ 216 = 6 cm
d = 2 × 6 = 12 cm
6) vol 1 : vol 2
4/3 phi 3³ : 4/3 phi 6³
27 : 216
1 : 8