Alan

There isn't one! 

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Good reasoning Melody.

Here's an alternative approach as a check:

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262.5 = 250 + 250*(1/2)*(1/10) so

5% of 262.5 = 12.5 + 12.5*(1/2)*(1/10) = 12.5 + 6.25*(1/10) = 12.5 + 0.625 = 13.125

Is that what you are looking for?

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Turn them into degrees (grades) by adding degrees + minutes/60 + seconds/3600

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cosh(x) = (e^x + e^-x)/2  where e is Euler's number: 2.718281828.....

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If your y-direction is perpendicular to AC then the component of the 2kN force in that direction will be either 2kN or -2kN depending on which direction you choose as positive.

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$${\mathtt{v}} = \left({\frac{{\mathtt{4}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{{\mathtt{1.5}}}^{{\mathtt{3}}} \Rightarrow {\mathtt{v}} = {\mathtt{14.137\: \!166\: \!941\: \!154\: \!069\: \!6}}$$

 and the result is in cm³

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