Acircular flower bed is 19 m in diameter and has a circular sidewalk around it that is 2 m wide. find the area of the sidewalk in square meters. use 3.14 for pi. the area of the sidewalk is m^2

We can model the problem as two concentric circles.
 We want to find the area between the circles.
 The equation for the area of the sidewalk is:
 A = pi * (R ^ 2 - r ^ 2)
 Where,
 R: greater radio
 r: minor radius
 We have then:
 R = 19/2 + 2
 R = 11.5 m
 On the other hand,
 r = 19/2
 r = 9.5 m
 Substituting values we have:
 A = 3.14 * ((11.5) ^ 2 - (9.5) ^ 2)
 A = 131.88 m ^ 2
 
 The area of the sidewalk in square meters is:
 A = 131.88 m ^ 2