What shapes are these formulas

1. 1/3 (pi r ^2) h

2. 1/3 (b•h) h

3. 1/3 (1/2•b•h) h

4. 1/2 (b•h) h

1. cone
2. rectangular pyramid
3. triangular pyramid
4. triangular prism

Besides the fact that your textbook has all of these formulae, a little research would go a long way !

http://www.calculatorsoup.com/calculator…

@ƒ