Question

find the suraface area of a sphere of daimeter 14cm​

Answer 1

QuEsTiON :-

$\large \mathsf \pink{ \: find \: the \: surface \: area \: of \: a \: sphere \: of \: diameter \: 14cm}$

AnSwEr :-

we know that ,

$\large { \boxed{ \mathsf \blue{radius \: of \: sphere \: = r = \frac{diameter}{2} }}}$

so ,

$\large {\mathsf \blue{ = \frac{14}{2} = 7cm }}$

$\large \mathsf \blue{surface \: of \: sphere \: =4 \pi {r}^{2} }$

$\large \mathsf \blue{ = (4 \times \frac{22}{7} \times 7 \times 7) \: {cm}^{2} }$

$\large \mathsf \blue{ = (4 \times 22 \times 1 \times 7) {cm}^{2}}$

$\large \mathsf \blue{ = 616 {cm}^{2} }$

hope it helps uu

Answer 2

QuEsTiON :-

$\large \mathsf \pink{ \: find \: the \: surface \: area \: of \: a \: sphere \: of \: diameter \: 14cm}$

AnSwEr :-

we know that ,

$\large { \boxed{ \mathsf \blue{radius \: of \: sphere \: = r = \frac{diameter}{2} }}}$

so ,

$\large {\mathsf \blue{ = \frac{14}{2} = 7cm }}$

$\large \mathsf \blue{surface \: of \: sphere \: =4 \pi {r}^{2} }$

$\large \mathsf \blue{ = (4 \times \frac{22}{7} \times 7 \times 7) \: {cm}^{2} }$

$\large \mathsf \blue{ = (4 \times 22 \times 1 \times 7) {cm}^{2}}$

$\large \mathsf \blue{ = 616 {cm}^{2} }$

hope it helps uu