Question

No 3 atau no 4 di jawab ya...

Answer 1

Panjang kawat = 500m = 50.000 cm
diameter kawat = 1,4
jari-jari = r = 1,4/2 = 0,7

V = πr².p
V = 22/7 (0,7)² (50.000)
V =22 (0,07)(50.000)
V = 77.000 cm³

berat kawat = 77.000 x 8 gr
                     = 616.000 gr
                     = 616 Kg

No.5
diketahui
t = 3r
Luas Selimut tanpa tutup  dan alas
96π = K.O (t)
96π = 2π.r(3r)
96π = 6.π.r²
r² = 96π/6π
r² = 16
r = 4

t = 3r
t = 3(4)
t = 12

Volume Tabung
V = π.r².t
V = (4)² (12)π
V = 16 (12) π
V = 192 π