How do I find the area of a triangle? Base times height right? well my problem only gives the base, it doesnt give the height. How do I fugre out what the height is?
2006-10-19 12:01:33 · 9 answers · asked by Niksterrrr 2 in Science & Mathematics ➔ Mathematics
the triange is 12 inches at the base, and 7.8 inches up the side.
2006-10-19 12:07:57 · update #1
You can calculate the area of a triangle if you know the length of two sides AND the angle between those two sides. (This angle is known as the "included angle".)
Formula:
Area = (s1 x s2 x sin(angle)) / 2. (That means multiple the length of side 1 by the length of side 2. Then multiple that by the sine of the included angle. Then divide that result by two.
Example: Two sides of a triangle have lengths 8 m and 5 m. The included angle measures 53o. Find the area.
Solution:
K = (1/2)(8)(5)Sin 53
K = 20 Sin 53
K = 16.0 m2
2006-10-19 12:24:12 · answer #1 · answered by Otis F 7 · 2⤊ 0⤋
The area of a triangle is 1/2 *base*height. Their must be something in the problem that gives you the height. They probably give you a side length and an angle, in which case you can solve for the hieght using basic trig. I need more info to give you a more specific answer. Good luck.
2006-10-19 12:04:44 · answer #2 · answered by bandl84 3 · 0⤊ 0⤋
Area of triangle = 12 inches X 7.8 inches / 2 = 46.8 inches ^2
2006-10-19 12:14:37 · answer #3 · answered by Artemis 2 · 0⤊ 0⤋
area equals half of the base times height. So multiple the bottom line (base) by the line going up (height) and divide by 2
2006-10-19 12:26:47 · answer #4 · answered by sj 3 · 0⤊ 0⤋
Area is 1/2 b times h.
The side is h.
2006-10-19 12:09:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Area of a Triangle Formula
A = 1/2 b h
-- - - - - - - -s
2006-10-19 13:11:27 · answer #6 · answered by SAMUEL D 7 · 0⤊ 0⤋
area is : S=(12*7.8)/2
2006-10-19 14:00:59 · answer #7 · answered by Majdi B 3 · 0⤊ 0⤋
first of all it's BASE*HEIGHT / 2
second of how can i help you if i dont know the question
2006-10-19 12:07:51 · answer #8 · answered by Anonymous · 0⤊ 0⤋
come out with thefull problem so we can help you
2006-10-19 12:03:59 · answer #9 · answered by raj 7 · 0⤊ 0⤋