Question

If the diametre of a circle is 4.2 cm.
Find the circumference of circle.
(a) 13.2 cm
(b) 12.2 cm
(c) 11.2 cm
(d) 10.2 cm​

Answer 1

Answer:

13.19cm is the right answer if you wish you also write

option (a) 13.2 cm.

Please mark me as brainliest answer

Answer 2

Step-by-step explanation:

$\bold{ \textit{ \colorbox{green}{✅ \: Verified answer }}}$

$\huge{\mathfrak{ \boxed{ \color{red} \colorbox{gray}{Given :-}}}}$

$\bull \: diameter \: of \: circle ,d= 4.2 \: cm$

$\implies \: radius = 2.1 \: cm$

$\mathtt{We \: know \: that}$

$circumference \: of \: circle = 2\pi :r$

$\implies \not2 \times \frac{22}{ \not7} \times \frac{ \not21 \: ^{3} }{ \not10 \: ^{5} }$

$\implies \frac{3 \times 22}{5}$

$\implies \frac{ \not66 \: ^{13.2} }{ \not5}$

$\implies \boxed{13.2 \: cm \: }$

Hence it's circumference Will be 13.2 cm, hence option (a) is correct one.