Question

a circular Mirror Has a radius of 5 in find the A circumference and B area of the mirror use exact value of pi round your answer to one decimal place

Answer 1

A. The circumference will be

`\text{circumference}=2\pi r=2\pi(5)=10\pi\approx31.4\text{ in}`

B. The area will be

`A=\pi r^2=25\pi\approx78.5^{}`

squared inches are the units of the point B