Posted by **Debbie** on Wednesday, March 4, 2009 at 1:13pm.

Area of a Triangle. The area in square meters of a triangle is given by A(x)=x^2+5x+6

a)Find A(5)

b)If the length of the triangle is x+3 then what is the base of the triangle?

- math -
**bobpursley**, Wednesday, March 4, 2009 at 2:03pm
a(5)=5^2+5*5+6

compute that.

Now, Area is also equal to 1/2 base*length

but when x=5, length is 8, and area is as above.

Area=1/2 (8)*base

solve for base.

- math -
**Debbie**, Wednesday, March 4, 2009 at 2:47pm
Can you let me know if I went wrong here

A(5)=52+5(5)+6

5A=25+25+6

5A=56

A=56/5

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