Question

The ratio of the radius and height of a cylinder is 2:3. If its volume is 12936 cm3, then find the total surface area of the cylinder .​

Answer 1

Answer:

We always calculate the TSA of cylinder 2πr (r+h)

Step-by-step explanation:

Therefore the volume is πr²h

so let the radius be 2xcm and height be 3xcm

22/7×2x²×3x

x³=12936×7

      12×22

⇒343

⇒when we divide this equation we get x=7

so the radius will be 14 and the height will be 21 because x is 7 by substituting 2xcm and 3xcm.

TSA of cylinder 2πr (r+h)

2×22/7×14(14+21)

that is 3080cm²