Monica has a piece of canvas whose area is `551\ m^2`. She uses it to have a conical tent made, with a base radius of 7 m. Assuming that all the stitching margins and the wastage incurred while cutting, amounts to approximately`1\ m^2`,

Explanation

`area = 551 m^2`,` r = 7 m`
`bb"wastage" =1m^2`


`bb"area of cone" =1/2xxbb"base"xxbb"height"`

`551=1/2xx7xxbb"height"`

`bb"height"=157.4m`

`bb"Volume of cone" =1/3pir^2h=164.89`