Edexcel A Level Maths: Pure Year 1, Chapter 11 - Challenge Questions Walkthrough

[@crepecake5290]

For 11c why wouldn’t doing the scalar quantity of AB and scaler quantity of AD, and multiplying them together, get us the area? I tried it and didn’t get the answer

[@dylanpi]

To find the area of a parallelogram by multiplying two lengths, it has to be a base and a perpendicular height - AB and AD aren't perpendicular so you can't multiply them to find the area

[@crepecake5290]

@@dylanpi oh ok thanks