I am trying to write a sheets document with all kinds of formulas for math, engineering and physics, and I am currently doing a formula for finding out the area of a scalene triangle knowing the three sides the formula is the the square root of:
s(s - a)(s - b)(s - c)
where s is:
a + b + c / 2
and a, b and c is the sides of the triangle.
I have this formula in google sheets:
=SQRT(I64 x (I64-E64) x (I64-F64) x (I64-G64))
where the x is a *, and I can't for the life of me find out what I am doing wrong.
I64 is the semi-parameter, while E, F and G64 is the sides. The formula gives me 0 as the answer, but that's not correct. It is supposed to do the calculations in the parentheses first, which should then be multiplied. So for example, if the sides are 5, 8 and 9, the semi-parameter is 11. The formula should then do something like this:
SQR of 11(11-5)(11-8)(11-9)
SQR of 11(6)(3)(2)
SQR of 396
19.8997....
I have looked into order of operation that google sheets does, and it should begin with parentheses.
I64, or the semi-paremeter, is also a formula, simply adding the sides and diving by 2. I have not had an issue with adding formulas to other formulas like this before, so is there something I am not seeing here?