It's not a cube. It should be a square.
You should only comparing the area of the triangle. Just because
it's the VOLUME of a prism does not mean it has to be a cube.
The volume of the prism (for the relative volumes and timings)
is dependent entirely on the area of the triangle as the rest of
the figure (the breadth) is constant.
Thus it should be ^2 instead of ^3.
The answer is t = 2s.
Take my word for it.
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As for the Africa population question, you HAVE TO ROUND DOWN to
31 people.
Having a decimal in your answer (31.2 people) will result
in a 0.
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Also, I just remembered. One of the answers was 28 degrees or
something like that.
The 1 d.p. is compulsory.
Meaning putting 28 degrees instead of 28.0 degrees results in
one mark deducted from the entire paper.
Regardless of how many s.f. or d.p. errors you make, only one
mark (maxmimum) can be deducted for each error in one paper.
So no worries.
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If you have been relatively confident about your maths thus far,
this paper should have been a breeze, and you should be getting at
least 70/80 marks as every question is extremely do-able.
Now prepare for the worst. Paper 2.
nice analysis, hope that this is right as this are the same
answer as mine hahas
i totally agree with the last statement. paper 2 will be
hell!
and ya, there isnt a spot for us to write calculator model
right?