Answer:
[tex]r=\frac{19M}{14h}[/tex]
Step-by-step explanation:
The equation is given as:
[tex]M=\frac{7r2h}{19}[/tex]
Assuming all the unknown variables are positive, we can make [tex]r[/tex] the subject of the formula to obtain it in terms of M & h:
[tex]M=\frac{7r2h}{19}\\M\times19=7r2h\\\\\frac{19M}{2h}=7r\\\\r=\frac{19M}{2h\times7}\\\\r=\frac{19M}{14h}[/tex]
or [tex]r=1.3571M/h[/tex]
Hence, r as in terms of M& H is given as
[tex]r=\frac{19M}{14h} \ or \ 1.3571M/h[/tex]