There is a circular park diameter =84 m A wide road of 3 5 m runs outside around - Maths - Perimeter and Area

Question

There is a circular park diameter =84 m A wide road of 3 5 m runs
outside around it Find then cost of constructing the road at Rs 200
per square metre ( pie = 22/7 ) please answer fast

Lovina Kansal · Accepted Answer

Dear student
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/ck-files/ck_585e3afd446d5%20png"
style="width: 397px; height: 306px;">
Let the radiusr of circular park be 42mAnd radiusR of outer cicrle be 42+3
5m=45
5mArea of road=Area of outer circle-Area of circular park=πR2-πr2=πR2-r2=πR+rR-r=π45
5+4245 5-42=π×87 5×3 5=962
50m2So, Cost of constructing the road=Rs200×962
50=Rs192500
Regards

There is a circular park diameter =84 m . A wide road of 3.5 m runs outside around it . Find then cost of constructing the road at Rs.200 per square metre ( pie = 22/7 ) please answer fast