Question

the inner circumference of a circular track is 176 M the track is 7 M wide calculate area of track

Answer 1

inner circumference=2Πr=176=>r=176×1/2×7/22
r=28cm and width of the track=7m then outer radius (R)=28+7=35cm
area of track=Π[R+r][R-r]=3.14×(35+28)(35-28)=3.14×63×7=1384.74 sq.m