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A column and a sloped ceiling |
2011-06-10 |
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From Tom:
Hi! I am a woodworker who needs some help finding a formula. I have to make a cylinder shape column that butts up against a sloped ceiling using bending plywood. I need to figure out how to cut the shape on this flat piece of material. The diameter of the column is 54.375". The tallest point is 9 13/16" and the shortest point is 4 7/16". Any help would be greatly appreciated.
Answered by Harley Weston. |
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Construct a 30 degree angle |
2011-06-10 |
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From Ella:
they give you a simple straight line and ask you to construct an angle of 30 degrees at one end of the line using only a ruler and a compass?
Answered by Penny Nom. |
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Two trains |
2011-06-07 |
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From Lynn:
If the 1st train goes 60 mph and the 2nd train leaves 10 minutes later =
at a speed of 70 mph, how long does it take to catch up with the 1st =
train.
Answered by Penny Nom. |
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The diameter of a cake |
2011-06-06 |
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From nurul:
Best Bakery shop received an order from your school to bake a 5kg of round cake for teachers day celebration. if a kilogram of cake has a volume of 3800cm^3,and the height of cake is to be 7.0cm, calculate the diameter of the baking tray to be used to fit the 5kg cake ordered by your school?(used pai=3.142)
Answered by Penny Nom. |
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17/20 of way around around an octagon |
2011-06-05 |
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From Priscilla:
What side of an octagon is a snail on if it is 17/20 way around?
I think it is 6.8? Does that mean it is on side 6 or 7?
Answered by Penny Nom. |
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A line tangent to f(x)=1/x |
2011-06-05 |
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From Michael:
A line tangent to f(x)=1/x in the first quadrant creates a right triangle
with legs the x-axis and the y-axis. Prove that this triangle is always
2 square units regardless of where the point of tangency is.
Answered by Penny Nom. |
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Tiles for a back splash |
2011-06-04 |
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From Catherine:
How man 3 11/16 tiles do I need for 28 square foot for a back splash
Answered by Penny Nom. |
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A reel of paper |
2011-06-03 |
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From keith:
if a full reel of paper has 7750 metres on it with a diameter of 1240mm and a core diameter of 100mm how can work out the thickness of each strip of paper therefore allowing me to work out the metreage of the roll when its half in diameter at say 620mm
Answered by Penny Nom. |
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A markup of 40% |
2011-06-01 |
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From angie:
Want to mark up 2.50 by 40%.
Would I do 2.50 x 1.4 =3.50 ?
Answered by Penny Nom. |
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The surface area of a hemisphere |
2011-05-29 |
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From Brenda:
What is the surface area of a hemisphere with a radius of 2 inches?
Answered by Penny Nom. |
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The volume of a decagonal prism |
2011-05-29 |
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From Susan:
How do you find the volume of a decagonal prism?
Answered by Penny Nom. |
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How tall is the pole? |
2011-05-27 |
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From cynthia:
20 foot rope is tied 2 feet from the top of a pole and secured 8 feet from the base of the pole....How tall is the pole?
Answered by Penny Nom. |
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How many meters long should the race be? |
2011-05-26 |
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From Lee:
Nathan can walk at a rate of two meters per second while David can
easily go three-and-a-half meters per second. David offers Nathan
a 45 meter head start. How many meters long should the race be in
order for Nathan to win by a nose
Answered by Penny Nom. |
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16 golfers and 8 rounds |
2011-05-26 |
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From Gerry:
16 golfers and 8 rounds. To have each player play with as many others as possible.
Answered by Victoria West. |
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pi/2 + 12/13 |
2011-05-24 |
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From Jen:
If you have (pi/2) and you want to add it to (12/13), how would you go about it?
Answered by Chris Fisher. |
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