Question

a circular flower bed is 22 m in diameter and has a circular sidewalk around it that is 3 m wide find the area of the sidewalk in square meters use 3.14 for pi

Answer 1

Answer:

d=22m

radius of inner circle,r=d/2

=22/2

=11m

now it has a circular sidewalk which is 3m wide

so,

radius of larger cirle,R=11+3

=14m

area of circular = area of. - area of

sidewalk. inner circle. larger

circle

= πR^2 - π r^2

=π(R^2-r^2)

=3.14(14^2-11^2)

=3.14(196-121)

=3.14(75)

=235.5m square