Question

Can u please help me with this questions and show me the step by step

Answer 1

Answer:

3080 cm² and 86240 cm² respectively

Step-by-step explanation:

8.

  Volume of cylinder = πr²h

here, r = 14/2 = 7cm ; h = 20 cm

So, volume = 22/7 × 7 × 7 ×20

                   = 3080 cm²

9.

    Volume of cylinder = πr²h

here, r = 28/2 = 14cm ; h = 40 cm

So, volume = 22/7 × 14 × 14 ×40

                   = 86240 cm²