Then, by pythagoras' formula:
Sorry I can't do Q.1, are you sure there is enough information?
My son is almost done with this course, I just need a little more help explaining this stuff to him please!!!!!
I think the last one is 99pi.
For the question with the trapezoid, do I take 32-14=18 to try to get the areas of the shaded parts? and if so, how do i decide how long each side is?