Question

find the T.S.A is a hemishphere of radius 10 cm
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Answer 1

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ɢɪᴠᴇɴ :-

⠀ r = 10 ᴄᴍ

ᴛᴏ ғɪɴᴅ :-

⠀⠀ ᴛᴏᴛᴀʟ sᴜʀғᴀᴄᴇ ᴀʀᴇᴀ

sᴏʟᴜᴛɪᴏɴ :-

⠀⠀⠀⠀⠀ ᴛsᴀ = 3 π${r}^{2}$

⠀⠀⠀ ᴛsᴀ = 3 ×3.14 × 10 ×10

⠀⠀ ᴛsᴀ = 3 ×314

⠀⠀ ⠀ ᴛsᴀ = 942 ${cm}^{2}$