Question

The radius of a circular garden is 84m. inside it there is a 7 metre wide road along its circumference. find the area of this road​

Answer 1

Solution :

Radius of circular garden : 84 m

Width of the road along the circumference of the garden: 7 m

Remaining radii : 77 m

To find : Area of Road

=> Total Area of circular garden - Area of circular garden excluding the road

=> T ( 84 )? - T (77)2

=> TT x ( 161) x 7

=> 22 x 161

=> 3542 m2 .

Answer: The required area of this road is 3542 m2.

Additional Information :

Area of a circle - a r?

Circumference of a circle : 2 ur

Area of a semi circle : ( 180/360) TTr?

Circumference of semi circle : IT r.