Question

There is a path of uniform width 7m round and outside a circular garden of diameter 210 m find the area of the path

Answer 1

radius of bigger circle R=d/2
=120/2
=60m
radius of smaller circle r=113/2
r=56.5m

area of path =(are of bigger - (are of smaller
circle.) circle)
=
$are \: of \: \: circle = \pi \: r ^{2}$
=πR^2 - πr^2
= π (R^2-r^2)
=π (60*60. - 56.5*56.5)
=π (3600-3192.25)
=22/7*407.75
=22*58.25
=1281.5m