Question

Find the volume and surface area of a right cone with a radius of 4 inches and a height of 7 inches

Answer 1

Volume of a cone =

`v=(1)/(3)\pi r^2h`

From the question;

r= 4 h=7

π is a constant and it is equal to 22/7

substitute the values into the formula;

`V=(1)/(3)*(22)/(7)*4^2*7`
`V=\text{ }(2464)/(21)`

`V=117.33inch^3`