Worth 99 points im so confused.

a. at a zoo, the lion pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle (blue) with a radius of 11 m. the inner edge if the sidewalk is a circle (orange) with a radius of 9 m. find the approximate area of the larger circle (blue)

b. find the approximate area of the smaller circle (orange)

c. find the approximate area of the sidewalk (shaded region between the blue and orange circles.)

use 3.14 for pi. show your work!

(use 3.14 pi on all three problems! )

A  379.94 m^2

B 254.34 m^2

C 125.6 m^2

Step-by-step explanation:

A  Area of a circle is given by

A = pi r^2

We know the radius is 11

A = pi 11^2

A = 3.14 (121)

A = 379.94 m^2

B The Area of the orange circle

A = pi r^2

The radius is 9 m

A = pi 9^2

A = 3.14 (81)

A = 254.34 m^2

C  The Area between the circles is the difference between the large circle and the small circle

Ablue-Aorange

379.94-254.34

125.6 m^2

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

thats not a system of equations, that is a solution