Question

a circular path of radius 12 Cm has a road of 4 cm width all around it's outside. find the area of road ​



please solve it fast

Answer 1

et radius of Area (A)= Radius of circular park +radius of road

=12+4=16 cm

Using Area of Circle= pi.r²

A=pi×16²

=pi×256

Area of circular Park(a)=pi*12²

=pi*144

Now Area of Circular Road= A-a

=pi.*256-pi*144

=pi(256-144)

=pi(112)

=2464/7

=352 cm²

Area of the road= 352 cm²

Hope this helps you.