Question

Can someone please help me with this?

Show work on part c

Answer 1

Part A:-

`2\pi \: r`

Part B:-

`\pi {r}^(2)`

Part C:-

`area \: = \pi {r}^(2) \\ 64\pi = \pi {r }^(2) \\ √(64) = r \\ 8 =r`

Hence r = 8 cm

Now, Circumference = 2πr

`2 * (22)/(7) * 8 \\ \\ (352)/(7) \\ \\ 50.2857`

Hope it helpful to you