Question

No scams. Show your work. write answer as a percent and round the nearest whole number if needed.​

Answer 1

Explanation:

we will find the area of the inner circle and then the area of the outer circle and see what the ratio is between those 2

area of a circle =
`\pi`
`r^(2)` (where r is the radius, NOT the diameter, easy to confuse)

the radius of the inner circle is 2.5. which is half of the diameter of 5

inner circle =
`\pi`*(2.5)^2

inner circle = 19.6349...

outer circle =
`\pi`*(10^2)

outer circle = 314.1592...

the ratio is 19.6349... / 314.1592... = 0.0625

0.0625 = 6.25%

= 6% ( rounded to nearest whole number )