Question

The curved surface area of cylinder is 2π (y²+7y+ 12) and its radiy is (y-3) find the hight of the cylinder​

Answer 1

given CSA of cylinder =2π(y

2

−7y+12)

radius =y−3

we know CSA =2πrh=2π(y

2

−7y+12)

h=

y−3

y

2

−7y+12

height = [see image]

Hence height of given cylinder is y−4

actually it is (y²-7y+ 12)