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Tutors Answer Your Questions about Bodies-in-space (FREE)
Question 415114: Hi all
sorry ,My english is not good , here question :
suppose we have sheet metal with 250mm*200mm*0.5mm and want to make "core like cylinder" with 100mm diameter & 200mm length, how many sheet metal do we need ?
thanks a lot.
Click here to see answer by mananth(16946)  |
Question 442627: I need to fill bowls with candy. Each bowl is 14 inches high and 16 inches at it's widest point. How do I calculate how much I need to fill bowls? The formula 4/3 times pie times radius cubed gave me about 2144.66. What does that mean?
Click here to see answer by stanbon(75887) |
Question 459755: Sphere B has 4 times the surface area of sphere A. How many times the volume of sphere A is the volume of sphere B?
I know the surface area formula for a sphere is 4(pi)(r)^2, however, when i did the problem, i was not sure whether the answer was 4pi?
Could you please help me out?
Thank you.
Click here to see answer by richwmiller(17219)  |
Question 459755: Sphere B has 4 times the surface area of sphere A. How many times the volume of sphere A is the volume of sphere B?
I know the surface area formula for a sphere is 4(pi)(r)^2, however, when i did the problem, i was not sure whether the answer was 4pi?
Could you please help me out?
Thank you.
Click here to see answer by amoresroy(361)  |
Question 473020: A tub is shaped like a rectangular solid, with internal measurements of 2 feet*2 feet*5 feet. If two faucets, each with an output of 2 cubic feet of water per minute pour water into the tub simultaneously, how many minutes does it take to fill the tub completely?
Help me please.
Click here to see answer by ccs2011(207)  |
Question 499276: A cylindrical tin of height h cm and radius r cm, has a surface area, including its top and bottom, A cm^2.
i) Write down an expression a A in terms of r, h and pi.
I got this to be A = 2pi r h + 2pi r^2
ii) A tin of height 6cm has surface area 54picm^2. What is the radius of the tin?
I'm not sure how to work this part out.
iii) Another tin has the same diameter as height. Its surface area is 150picm^2. What is its radius?
I'd really appreciate your help.
h = 6
Click here to see answer by Theo(13342)  |
Question 544190: what is the exact area of the base of a circular swimming pool with diameter of 16ft?
i tried a=3.14xrxr x is the multiplication symbol
so 3.14 x 8 x 8 and it was equal to 200.96 which is none of the answer choices
Click here to see answer by lwsshak3(11628) |
Question 544815: Hello,
I am trying to imagine using three flash lights in a ball to light it up without changing the balance of the ball (too much). If the end of each light is at the center, could they be positioned to be equidistant from each other?
If it were just a single plane, then the angle between each would be 120 degrees. How should two be rotated along other planes to have the ends be equidistant in space?
Thanks!
Click here to see answer by Alan3354(69443)  |
Question 550880: I need to pack round objects into a rectangular box. The box is a fixed length of 20" and fixed width of 10". If the part is a round cylinder of 3.5" diameter, how many can I get in the box? If the part is 4.5", how many can I get in the box? I'm really asking: "What is the formula to determine this?"
Click here to see answer by ankor@dixie-net.com(22740)  |
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