That's <em>false</em>. It's just the opposite. As you become more fit, your heart becomes able to accomplish more with each beat, so your resting heart rate DEcreases.
You would get 13.7
mi/51mm=3.5mm/13mm
by solving it you will B13.7mm
Answer: 
Explanation:
We have the following equation:

We have to find
this means we have to isolate it:

