# Warm Up.

## Presentation on theme: "Warm Up."— Presentation transcript:

Warm Up

Volume of Prisms and Cylinders
12.4

Volume of a Prism

Formula V = Bh where B is the area of the base and h is the height

EXAMPLE 2 Find volumes of prisms and cylinders Find the volume of the solid. a. Right trapezoidal prism SOLUTION (3)(6 + 14) a. The area of a base is 1 2 = 30cm2 and h = 5 cm. V = Bh = 30(5) = 150cm3

Volume of Cylinder

Formula of Cylinder V = Bh Where B is the area of
The base and h is the Height of the cylinder B = πr2

Find the volume of an oblique cylinder
EXAMPLE 4 Find the volume of an oblique cylinder Find the volume of the oblique cylinder. SOLUTION Cavalieri’s Principle allows you to use Theorem 12.7 to find the volume of the oblique cylinder. V = π r2h Formula for volume of a cylinder = π(42)(7) Substitute known values. = 112π Simplify.

Find the volume of an oblique cylinder
EXAMPLE 4 Find the volume of an oblique cylinder Use a calculator. The volume of the oblique cylinder is about cm3. ANSWER

GUIDED PRACTICE for Example 4 and 5 5. Find the volume of the solid shown below. ANSWER ft3

Homework Pg 5-25 odd, not 13, 21