I've got two questions that I can't seem to figure out.
For question 10 in the GRE math review for chapter 3, the question asks:
For rectangle ABCD below, AB = 5, AF = 7, and FD = 3, find the following:
(a) Area of ABCD
(b) Area of triangle AEF
© Length of BD
(d) Perimeter of ABCD
letters a,c,d I've got but I really don't know how to find b
[ATTACH=CONFIG]6494[/ATTACH]
For question 11 in chapter 3, the questions asks:
In the parallelogram ABCD below, find the following:
(a) Area of ABCD
(b) Perimeter of ABCD
© Length of diagonal BD
letters a and b I've got but I can't figure out c
[ATTACH=CONFIG]6495[/ATTACH]
any help would be greatly appreciated!