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# Please help me..coordinate geometry?

Hello, I have attached the question with my working on here:

I need help for (c) only, I can do part (d). I have done (a) and (b) since you need those information to solve (c), you can see the second picture.

Here is the graph: https://www.desmos.com/calculator/sfid3lilul

Thanks in advance

### 2 Answers

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- ?Lv 73 years ago
Area of the trapezium is |OA|(|OC|+|AB|)/2.

This is the perpendicular height × the average of the lengths of the parallel sides.

As you have already shown yourself capable of the other parts of the question, I will call that the "help" you asked for, and not insult you by performing the calculations.

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