Question
Curved surface area of cylinder is 256sq.cm and its volume is 512cm cube . Find its radius and height.
Answers
Reiny
radius --- r
height ---- h
Volume = π r^2 h = 512
curved area of cylinder (the sleeve) = 2πrh = 256
πr^2h/(2πrh) = 512/256
r/2 = 2
r = 4
sub into 2πrh = 256
2πr(4) = 256
r = 32/π
check my arithmetic
height ---- h
Volume = π r^2 h = 512
curved area of cylinder (the sleeve) = 2πrh = 256
πr^2h/(2πrh) = 512/256
r/2 = 2
r = 4
sub into 2πrh = 256
2πr(4) = 256
r = 32/π
check my arithmetic