Explaination :
Here we have been given with the diameter of a circle whose measure is of 42cm and we're asked to calculate radius.
★ As we know that :
- [tex]\boxed{ \sf{r \: = \: \dfrac{d}{2} }} \: \red\bigstar[/tex]
★ We have :
- diameter (d) = 42 cm
- radius (r) = ?
★ Applying the value of diameter in it :
[tex]: \: \implies \: \sf{r \: = \: \dfrac{42}{2} } \\ \\ : \: \implies \: \sf{r \: = \: \cancel\dfrac{42}{2} } \\ \\ : \: \implies \: \blue{\bf{r \: = \: 21}}[/tex]
- [tex] \therefore \: \underline{\bf{Radius \: is \: of \: 21 \: cm}}[/tex]
