Question

find the 1 st one step by step

Answer 1

Answer

$2\pi r\\1) 2 *22/7 *35\\= 220 cm\\2) 2 *22/7 * 4.2\\= 26.4cm\\3)2 *22/7* 15.4\\= 96.8cm$

Answer 2

$\LARGE\underline{\mathcal{\purple{A}\green{ɴ}\pink{s}\blue{ᴡ}\purple{ᴇ}\green{ʀ}\pink{★}}}$

${ \mathtt{\blue{radius \: (r) = 35 \: cm}}}$

${ \mathtt{\blue{circumference \: of \:circle \: = 2 \: \pi \: r}}} \\ { \mathtt{\blue{ = 2 \times \frac{22}{7} \times 35 }}} \\ { \mathtt{\blue{ = 2 \times \frac{22}{ \cancel{7} } \times \cancel {35} }}} \\ { \mathtt{\blue{ = 2 \times 22 \times 5}}} \\ { \boxed {\sf\mathtt{\blue{ = 220 \: cm {}^{2} }}}}$