11. The radius of a circular field is 20 m. Inside it runs a path 5 m

1.	11. The radius of a circular field is 20 m. Inside it runs a path 5 m wide all around. Find the area of thepath. (Take Ď =-)
Answer» Radius of circular field = 20m As, we know area of circle is given by the formula → πr² So, Area of circle = (22/7) (20)² = (22/7)(400) = 1257.14 m² If the width of path is 5m then the radius of circle when we remove the path = (20-5)m= 15m Area of circle without path = (22/7)(15)² =( 22/7)(225) =707.14 m² So, The area of path will be → Area of whole circle - Area of circle without the path = 1257.14 - 707.14 = 550 m²

11. The radius of a circular field is 20 m. Inside it runs a path 5 m wide all around. Find the area of thepath. (Take Ď =-)

Answer»

Radius of circular field = 20m

As, we know area of circle is given by the formula → πr²

So, Area of circle = (22/7) (20)²

= (22/7)(400)

= 1257.14 m²

If the width of path is 5m then the radius of circle when we remove the path = (20-5)m= 15m

Area of circle without path

= (22/7)(15)²

=( 22/7)(225)

=707.14 m²

So, The area of path will be →

Area of whole circle - Area of circle without the path

= 1257.14 - 707.14

= 550 m²