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

Mathematics

1 answer:

Ierofanga [76]3 years ago

7 0

Answer:

Step-by-step 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 )

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