area of a triangle help please?

Question

can someone please please please explain to me how to find the area of a triangle??? thank you ++ i have a quiz tomorrow so now im studying LOL thanx

Answer 1

1/2 bh

Answer 2

No wonder this country is behind in math!!!! What is slant height??? That side of a right triangle is called the hypotenuse.Someone else says divide by 1/2. If you divide by 1/2 you're really multiplying by 2.....You should have said divide by 2!!!! Tell them a simple answer and don't show how ridiculous you are. The area of a triangle is 1/2bh which means to multiply the base times the height and then divide by 2!!!!

Answer 3

The formula for the area of a triangle is:

1/2 b x h

(b = base, which is the bottom width of the triangle)
(h = height, which is the distance from the base to the tip)

Just plug in b and h to find the area. Normally, b and h are given OR you must find them.

Here are some sites that may help you:
- http://www.clarku.edu/~djoyce/trig/area.html
- http://www.mathopenref.com/trianglearea.html
- http://www.mathgoodies.com/lessons/vol1/area_triangle.html

If this doesn't help, I suggest calling/asking a parent, sibling, classmate, friend, or even a teacher.

Answer 4

You need to find out the length of one side, and the length of the altitude drawn from that side, and multiply them. Then divide that by 2.

OR, if you are in advanced algebra, use the formula
Area = 1/2 a b sin C where a and b are the lengths of 2 sides and C is the angle between them.

OR area = sqrt [s(s-a)(s-b)(s-c)] where a, b, and c are the lengths of the sides and s is the semiperimeter (half the perimeter).

Answer 5

Area=1/2 base x height
so multiply the base times the height then divide the answer by two, OR multiply it by .5.
I hope this helps!

Answer 6

1/2 base times height
If it don't have the height, and just the slant height use the Pythagorean theorem, A²+B²=C²
A² being the length, B² being the unknown height, C² being the slant height.
Ex.1 Triangle with a base of 10 and a slant height of 5
A²+B²=C²
10²+B²=5²
100+B²=25
100(25)= 2500
Find the square root of 2500

Answer 7

1/2 base times height

Answer 8

HEHEHE. Well to fight the area of a right triangle u use the formula
A (Area) = B (Base) X H (Hight). Its a bit more complex for other triangles. Sucks a cant remember, i should be ashamed of myself, being in Calculus and all.

Answer 9

It's base times height divided by half. Base is the bottom and the height is from the point down to the base.

Answer 10

Just add the sides and divide it by two... or,then, use this formula... s=(a+b+c)/2 then, area is equal to square root of (s)(s-a)(s-b)(s-c)...Thats it...