Find the area of the triangle.
I got 30?

Question

Find the area of the triangle.
 I got 30?

anonymous · Answer

attachment

anonymous · Answer

@waterineyes or @lgbasallote

lgbasallote · Answer

why cant i get any of the choices :/

lgbasallote · Answer

lol silly me

lgbasallote · Answer

what is 12 there?

anonymous · Answer

Use the pythagorean theorem first..

phi · Answer

though it seems unlikely, the area of a triangle is
1/2 base * height

base is 5 and height is 8

anonymous · Answer

$$x^2 = 12^2 - 8^2 \implies x = \sqrt{144 - 64}$$
Find x from here..

anonymous · Answer

phi gave the answer it's 20

anonymous · Answer

|dw:1342785393788:dw|

anonymous · Answer

That is not the answer @A.Avinash_Goutham

phi · Answer

@waterineyes want to bet?

anonymous · Answer

We have to find area of the two triangles then subtract them..

Basically we have to find:

|dw:1342785518832:dw|

anonymous · Answer

Yes why not..

Dotted line shows only that how to find the area..

lgbasallote · Answer

wait...which triangle are we looking for o.O

lgbasallote · Answer

i think phi is right...

anonymous · Answer

@waterineyes X=8.94?

anonymous · Answer

Sorry yes phi is right..

lgbasallote · Answer

area is just 1/2 base x height

base is 5

height is 8

so 1/2  x 5 x 8

anonymous · Answer

I forget that base mattes in the area height does not..

amistre64 · Answer

a triangle is half the area of its rectangle ......

lgbasallote · Answer

height matters...

anonymous · Answer

Here it is obtuse triangle so perpendicular will be drawn outside the triangle..

anonymous · Answer

None of that is really relevant. The area is half the product of the base and height. So, 20. Done.

amistre64 · Answer

is 8^2 + 5^2 = 19^2?