# triangles

#### e^(i*pi)

MHF Hall of Honor
http://www.usatestprep.com/modules/questions/qq.php?totalQuestions=10&condition=hardest&testid=34&strand=206# Timmy has a triangular garden, but to add the right amount of fertilizer and top-soil he needs to know the area of the garden. Which of the formulas will give him the correct answer? The dimensions of the garden are given in the diagram shown.
A)
A = (7)2(14)
B)
A = 1
2
(7)(14)
C)
There isn't enough information given on the diagram.
D)
A= 1
2
(7) (7
3
$$\displaystyle A = \sqrt{s(s-a)(s-b)(s-c)}$$ where $$\displaystyle s=\frac{a+b+c}{2}$$