book Maths Puzzle Numerical Ability

Please help me solve this geometry problem: There is a shape consisting of 5 sides,the left side is straight and measures 10 cm, across the top measures 6cm, the right side goes do

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book Other Question

through (8,-3)
perpendicular to -5x-3y=-31
i need help with these problems as well please.

10 divided by w-8 subtracted from 12 over 8-w the answer i got was 22 divided by w-8????