This is from http://www.mindchallenger.com where there is a collection of various puzzles and brain teasers.
Find the area of a triangle whose sides are 13, 18, and 31 inches.
2007-09-04 09:49:47 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Area =0 because 18 +13=31
2007-09-04 09:54:24 · answer #1 · answered by ironduke8159 7 · 1⤊ 0⤋
Not a triangle.
The sum of two sides should be larger than the third, but 13+18 = 31.
2007-09-04 09:54:06 · answer #2 · answered by Amit Y 5 · 2⤊ 0⤋
It seems to me that the sum of the lengths of the two shorter sides of a triangle must exceed the length of the longer side-called 'triangle inequality'.
Your triangle falls in upon itself...
Zero.
2007-09-04 09:59:09 · answer #3 · answered by Greensideup 3 · 0⤊ 0⤋
thats a line, not a triangle
2007-09-04 09:55:14 · answer #4 · answered by bassboy22 3 · 0⤊ 0⤋