Answers

2016-01-31T10:06:56+05:30
2(pi)R(R+H)=462
2(pi)R² + 2(pi)RH=462
2(pi)R² + 154=462
R²=308/2(pi)
R²=49
R=7

Since, 2(pi)RH=154
H=154/2(pi)R
H=7/2

Volume=(pi)R²H=539
1 5 1
2016-01-31T10:40:44+05:30
TSA = CSA + 2πr²
        =  1/3 TSA + 2πr²
TSA - 1/3 TSA = 2πr²
2/3 TSA = 2πr²
2/3 × 462 = 2πr²
r² = 49
r = 7

CSA = 154
2πrh = 154
2×22/7×7×h = 154
h = 154/44
h = 7/2

V = πr²h 
= 22/7 × 7² × 7/2
=11 × 49
= 539 cm³

∴ the volume is 539 cm³

plzz mark as brainliest

0