If the circumference of a circle is 198 cm , find its radius.
(a) 21.5 cm
(b) 31.5 cm
(c) 27.5 cm
(d) 37.5 cm
Ans : _______
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If the circumference of a circle is 198 cm , find its radius.
(a) 21.5 cm
(b) 31.5 cm
(c) 27.5 cm
(d) 37.5 cm
Ans : _______
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[tex]\huge\boxed{\fcolorbox{blue}{aqua}{Explanation}}[/tex]
r≈31.51cm
[tex]\mathbb{\pink{\huge{ANSWER}}}[/tex]
(b) 31.5 cm
Verified answer
[tex]\mathfrak{\bf{\underline{\underline{GIVEN \ :-}}}}[/tex]
círcumfєrєncє σf círclє = 198 cm
[tex]\mathfrak{\bf{\underline{\underline{FORMULA \ :-}}}}[/tex]
[tex]ㅤㅤㅤㅤ \boxed{círcumference \: of \: círcle \: = 2\pi{ r}} \\ [/tex]
[tex]\mathfrak{\bf{\underline{\underline{SOLUTION\ :-}}}}[/tex]
[tex] \implies \: ㅤㅤㅤㅤ198 = 2\pi{r}[/tex]
[tex] \impliesㅤㅤㅤㅤ ^{99} \cancel{198} = \cancel{2} \times \frac{22}{7} \times r \\ [/tex]
[tex] \implies \: ㅤㅤㅤㅤ\frac{99 \times 7}{22} \\ [/tex]
[tex] \implies \: ㅤㅤㅤㅤㅤㅤ\frac{63}{2} \\ [/tex]
[tex] \impliesㅤㅤㅤㅤㅤ \boxed{\boxed {\approx31.5}}[/tex]