Question

The circular grass lawn of radius 35cm has a path of width 7cm. What is the area of the path?

pls ans i cant understand tis question

Answer 1

Radius of circular grass lawn(without path)=
`35 \: cm`

Radius of circular grass lawn (with path)=
`35 \: cm+7 \: cm=42 \: cm`

Area of circular path=
`\pi ( R + r)( R- r)`

`= \displaystyle{ (22)/(7) (42 + 35)(42 - 35)}`

`= \displaystyle{ (22)/(7) * 77 * 7}`

`= \displaystyle{ (22)/( \cancel7) * \cancel{77} {}^(11) * 7}`

`= 22 * 11 * 7`

`= 242 * 7`

`= 1649 {cm}^(2)`

`\boxed{\red{\frak{unic0rntaking0ver}}}`