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# Monday Math Madness - PowerPoint PPT Presentation

Monday Math Madness. Why does a flamingo lift up one leg ? Why do birds fly south in the winter ? What's an insect's favorite sport?. Do Now. Divide 1.) 3.45 ÷ 1.5 2.) 4.22 ÷ 2 3 .) 150.27 ÷ 3 . 5 /12/ 2014 10-2 B Volume of Cylinders. Key Concept. Volume of a Cylinder.

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Presentation Transcript
• Why does a flamingo lift up one leg?
• Why do birds fly south in the winter?
• What's an insect's favorite sport?
Do Now

Divide

1.) 3.45 ÷ 1.5

2.) 4.22 ÷ 2

3.) 150.27 ÷ 3

### 5/12/2014 10-2 B Volume of Cylinders

Volume of a Cylinder
• Label the BASE and HEIGHT of the cylinder below:

Height of the Cylinder!

Base of the Cylinder!

Example 1

Find the volume of the cylinder. Use 3.14 for . Round to the nearest tenth.

V = r2h

V ≈ 3.14(4)2(5)

V ≈ 251.2

The volume is about 251.2 cubic centimeters.

Example 2

The cylinder-shaped vase has a height of 12 inches and a diameter of 4 inches. What is the volume of the vase? Use 3.14 for . Round to the nearest tenth.

V = r2h

V ≈ 3.14(2)2(12)

V ≈ 150.7

The vase has a volume of about 150.7 cubic inches.

Ex.3

Area of a Circle

V = Bh

= r2• h

= (8ft)2 • (9ft)

= 64ft2 • (9ft)

= 576ft3

= 1809.6ft3

16ft

9ft

Homework
• Pg. 609 #1 – 26 Evens
• QUIZ WEDNESDAY!