bantu jwb no.4&5+cara ya. makasih

4.)
d = 14 cm => r = 7 cm
t(Tb) = tinggi tabung = 12 cm
t(K) = tinggi keeucut = 10 cm
s = garis pelukis
s² = r² + t²
= 7² + 10²
= 49 + 100
= 149
s = √149 = 12.2066 (12.6)
L = πr² + 2πrt(Tb) + πrs
= πr(r +2t(Tb) + s)
=22/7 × 7 (7 + 2 × 12 + 12.6)
=22 (7 + 24 + 12.6)
= 22 × 43.6 = 959.2 cm²

5.)
a.=> L 1 : L 2 : L 3 = (r1)² : (r2)² : (r3)²
= (2)² : (3)² : (4)²
= 4 : 9 : 16
b. => V 1 : V 2 : V 3 = (r1)³ : (r2)³ : (r3)³
= (2)³ : (3)³ : (4)³
= 8 : 27 : 64

maaf kalo ada yang salah..