Question

Need the answers to all of them just Answers and how to get

Answer 1

1) The area is given by:

`\pi(12)^2=452.3893sq\text{ in}\approx452.4sq\text{ in}`

2) The area is:

`\pi*12^2=452.3893sqkm\approx452.4sqkm`

3)The area is given by:

`\pi*9^2=254.4690049\approx254.5sqm`

4)The area is given by:

`\pi(11)^2=121\pi=380.1327sqcm=380.1\text{sqcm}`