Answer :
Step-by-step explanation:
[tex] \frac{r \times 9}{2} = 27 \\ \\ \therefore \: r = 27 \times \frac{2}{9} \\ \\ \therefore \: r = 3 \times 2 \\ \\ \huge \red{ \boxed{\therefore \: r = 6}}[/tex]
Step-by-step explanation:
[tex] \frac{r \times 9}{2} = 27 \\ \\ \therefore \: r = 27 \times \frac{2}{9} \\ \\ \therefore \: r = 3 \times 2 \\ \\ \huge \red{ \boxed{\therefore \: r = 6}}[/tex]