Question 5

(a) a, b, c are three natural numbers such that $$a \times b \times c = 27846$$. If $$\frac{a}{6} = b+4 = c-4$$, find $$a+b+c$$. 

(b) ABCDEFGH is a regular octagon with side length equal to a. Find the area of the trapezium ABDG.


Correct Answer: part_a=136 part_b=1.7071067812a2

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