7 = 2g + 5 pleas help... lolz
1 answer:
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The answer is: The diameter is 4 centimeters.
The explanation is shown below:
1. The volume of the cylinder is:
Where is the radius (
) and
is the height (
).
Then:
2. The total volume of the 12 spheres is:
3. The volume of the cylinder and the total volume of all the 12 spheres, are equal, therefore:
4. Now, you must solve for the radius:
5. The diameter is:
Total length of the string = yard
Length of string used for craft = of total length of string
= of
=
= yard
Length of the string left after use = Total length of the string - Length of string used for craft
Length of the string left after use =
=
Reducing it to the lowest term, we get
= yard
Therefore, the length of string left is yard.