Your "method" is mostly correct. But your numbers are not. Please do it over, methodically and cleanly and repost.It’s a bit of mess, but struggled with question b and c.
Subjotosh, would you give me any marks for my workings out?Your "method" is mostly correct. But your numbers are not. Please do it over, methodically and cleanly and repost.
I would calculate the area of the quadrilateral by dividing into 2 triangles whose sides will be known (after solving a and b) and Heron's formula.