Eric Nicholas K's answer to QN's Junior College 1 H1 Maths Singapore question.
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We need to express our total area S in terms of only one variable, so we need to figure out how to express the length of the water level EF in terms of h only.
Date Posted:
4 years ago
For part a, why the equation cannot be EF/EB = DQ/DP?
l/30 = h/4√21
l/30 = h/4√21
Because the triangles from which this equation is derived are not similar.
We need to find two similar triangles so that we can make the relevant similarity ratio statements.
We need to find two similar triangles so that we can make the relevant similarity ratio statements.
Thanks!!
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