A cone has a radius of 3 cm and height 4 cm. What is its volume? (Use \(\pi = 3.14\))
37.68 cm³
38 cm³
36 cm³
39 cm³
Correct answer: 37.68 cm³
Solution
The volume of a cone is \(\frac{1}{3}\pi r^2 h\). Substituting \(r=3\) cm, \(h=4\) cm, and \(\pi=3.14\), we get \(\frac{1}{3}\times 3.14 \times 9 \times 4 = 37.68\) cm³.