Question

Find the volume of a corn with the base radius of 3 cm and a height of 9 cm

Answer 1

Step 1

Write the formula for volume of a cone

`\begin{gathered} \text{Volume of a cone = }(1)/(3)\text{ }\pi r^2h \\ \text{Height h = 9cm} \\ \text{Radius r = 3cm} \end{gathered}`
`\begin{gathered} \text{Volume of a cone = }(1)/(3)\text{ x }\pi x3^2\text{ x 9} \\ \text{ = }\frac{9\text{ x 9}\pi}{3} \\ \text{ = }(81\pi)/(3) \\ \text{ = 27}\pi cm^3 \end{gathered}`