What is the output for my simple surveying calculations?

[kiteboy]

Hi hope somebody can help

Have some simple calculations to do for surveying (see attachment) but not sure what the output is I am getting

Its not homework its practice really ...the formulas are given so its really just a matter of figuring out what the output is I guess not sure

Been 20 years since I've done maths anywhere near this so forgive me if this is simple for everyone

Trying to figure out the tension calculation for example

I do the following in calculator (65-50) x 28.134/1.905X2.07x10^11

The answer I get is

1.070181445X10^-9

But I have no idea what that means I am guessing its 1.07mm? Or have I done it all wrong
Can anybody help?

 

[kiteboy]

I think I may have figured it out for tension at least

Should have put 28134 rather than 28.134 so that does come out as 1.07 mm

I THINK :)