Question

find the radius of a sphere whose surface area is 154m^2​

Answer 1

Surface area of sphere = 4πr^2

According to the given Question;

4πr^2 = 154 m^2

=> r^2 = 154 / 4π

=> r^2 = 12.255

=> r = 3.5007

so r is approximately equal to 3.5m

Answer 2

Answer:

$sᴜʀғᴀᴄᴇ \: ᴀʀᴇᴀ \: ᴏғ \: sᴘʜᴇʀᴇ = 4\pi {r}^{2}$

ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ǫᴜᴇsᴛɪᴏɴ:

$4\pi {r}^{2} = 154 {m}^{2}$

${r}^{2} = \frac{154}{4\pi}$

${r}^{2} = \frac{154}{4 \times \frac{7}{22} }$

${r}^{2} = \frac{7x7}{4}$

$r = \frac{7}{2}$

$r = 3.5m$

$ʜᴏᴘᴇ \: ɪᴛ \: ʜᴇʟᴘs \: ʏᴏᴜ..!!$