No but 10 and 15 are :D
8
Area of triangle: 0.5*12*14*sin(134.6183417) = 16 square units rounded to the nearest whole number
As given 51213 is just a number. However, a triangle with sides 5, 12, & 13, forms a classic Pythagorean right angled triangle.
That's not enough information to determine the area of that triangle. There are an infinite number of different right triangles, with different areas, that all have one side of 12.
A radius of a regular triangle is 12 . find the length of one side of the triangle?
28 is a triangle number. The 28th triangle number is 406.
The third triangle number is 6.
that's not a triangle
An obtuse triangle.
The fifth triangle number, known as T5 is 15.
The area of triangle is : 12.0
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.