<span>48/70=0.6857
</span><span>0.6857x100=68.57%</span>
If you round up the 27.64 to 28 and then multiply it bye 3 it eaquals 84
You can use the trig ratios. Draw a diagram to see which one is appropriate.
Tan would be used.
Tan29=x/20
20Tan29=x
Put this into your calculator and see what you get