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June 12th, 2009, 12:03 AM   #1
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A few questions for ya

just tell me if im right in presuming the following... Thanks!

1: the lateral area of a prism is the sum of the areas of its bases

2: all lateral faces of regular pyramids are congruent rectangles

3. if volume of a cube is 1000, the length of each of its edges is 10

4: the height of a right cylinder with radius 5 and volume 100 is 2 over pi

5: the area of a sphere equals 4pi times the cube of the radius

6:two right circular cones with radii 4 and 8 and heights 10 and 20 respectivly are similar
tobymac is offline  
June 12th, 2009, 12:39 AM   #2
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1. This is incorrect, since the lateral faces (whose area you want) are not called bases.

2. The lateral faces are triangles, not rectangles.

3. Correct.

4. Incorrect.

5. Incorrect.

6. Correct.
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June 12th, 2009, 10:33 AM   #3
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Re: A few questions for ya

Thank you so much skip...
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