Monday, May 23, 2011

Unit 6- Surface Area and Volume for Cylinders





Summary of Knowledge:
The goal of our investigation is to understand how to get the surface areaand the volume of figures. We made a project with 14 cans and 1 big piece of cardboard. We donated the box to the poor people of Ecuador.

All students should complete all of the investigation because after, you will need to review your notes to study.

Vocabulary:
surfae area:is the total area of all of its faces.
cylinder:is a three dimentional shape with a top and a base that are congruent circles.

Task Analysis:
Volume of a Cylinder

• Measure the diameter of the cylinder

• Divide the measurement by 2 (radius)

• Measure the height

• Multiply radius *radius*3.14*height.

Task Analysis:
Surface Area of a Cylinder:

• Measure the diameter of the cylinder.

• Divide the measurement by 2(radius)

• Measure the height.

• Multiply by 2* (radius*radius*3.14)+height*2*3.14*radius



Examples:

1.






R: 5 H:11












SA:2*(5*5*3.14)+11*2*3.14*5=502.65cm3
V: 5*
5*3.14*11=863.94cm2




2.





R:15 H: 20









SA: 2*(15*15*3.14)+20*2*3.14*15=3298.67cm3



V: 15*15*3.14*20=14137.17cm2
















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