what is the triangle's area?

Question

A triangle has sides of 13, 18 and 31 inches. What is the triangle's area?

Answer 1

zero

Answer 2

First, all the rules mentioned above apply to right triangles (where one of the angles =90 deg.)

Your triangle is not a right triangle.

The first thing you need to do is find out what the angles are, then create 2 right triangles with that triangle and calculate the areas of those triangles and add them together.

It involves using trig, and I really do feel like doing the calculations tonight (it is past midnight, and I had a big Pi Day celebration today).

If you don't have it by tomorrow, E-Mail me and I will work it out for you, but if you are having a problem with your homework, you should get your teacher to explain it, then you will know how to do it yourself.

Answer 3

those dimensions won't form a triangle. the sum of any two sides must be greater than the third side, (18+13=31, ... 18+13 is not > 31) and the difference of any two sides must be less than the remaining side. (31 - 18 is not less than 13... it equals 13

Answer 4

it's 1/2 x 13 x 18, so the answer is 117.

Answer 5

is it 13 x 18 divided by 2

Answer 6

Area of a triangle is = [(base) x (height)] / 2

if you want to get the sides it is c²=a²+b². ^^,

Answer 7

117

Answer 8

ther can be no triangle like this.

Answer 9

201.5 units squared

Answer 10

Why in this category? Is it a joke??