the radius of cylindrical tank with cap is 2.1 m and height is 2.9 m. Find its total surface area.
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ʜᴏᴩᴇ yᴏᴜ ʟɪᴋᴇ ᴍy ᴩʀᴏᴄᴇꜱꜱ
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=> ʀᴀᴅɪᴜꜱ ᴏꜰ ᴄyʟɪɴᴅʀɪᴄᴀʟ ᴛᴀɴᴋ (ʀ)= 2.1ᴍ
=> ʜᴇɪɢʜᴛ ᴏꜰ ᴛᴀɴᴋ (ʜ)= 2.9 ᴍ
=> ᴛᴏᴛᴀʟ ꜱᴜʀꜰᴀᴄᴇ ᴀʀᴇᴀ = 2π ʀ(ʀ+ʜ)
= 2×(22/7)×2.1×(2.1+2.9)
= 22× 0.6 × 5 = 66 ᴍ²
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ʜᴏᴩᴇ ᴛʜɪꜱ ɪꜱ ᴜʀ ʀᴇqᴜɪʀᴇᴅ ᴀɴꜱᴡᴇʀ
ᴩʀᴏᴜᴅ ᴛᴏ ʜᴇʟᴩ ᴜ
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=> ʀᴀᴅɪᴜꜱ ᴏꜰ ᴄyʟɪɴᴅʀɪᴄᴀʟ ᴛᴀɴᴋ (ʀ)= 2.1ᴍ
=> ʜᴇɪɢʜᴛ ᴏꜰ ᴛᴀɴᴋ (ʜ)= 2.9 ᴍ
=> ᴛᴏᴛᴀʟ ꜱᴜʀꜰᴀᴄᴇ ᴀʀᴇᴀ = 2π ʀ(ʀ+ʜ)
= 2×(22/7)×2.1×(2.1+2.9)
= 22× 0.6 × 5 = 66 ᴍ²
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ʜᴏᴩᴇ ᴛʜɪꜱ ɪꜱ ᴜʀ ʀᴇqᴜɪʀᴇᴅ ᴀɴꜱᴡᴇʀ
ᴩʀᴏᴜᴅ ᴛᴏ ʜᴇʟᴩ ᴜ
rakeshmohata:
ᴛʜᴀɴᴋꜱ ꜰᴏʀ ᴛʜᴇ ʙʀᴀɪɴʟɪᴇꜱᴛ ᴏɴᴇ
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1
Here r=2.1 m
h= 2.9m
TSA of cylinder=2πr(r+h)
=2×(22/7)×2.1×(2.1+2.9)
=2×(22/7)×2.1×5
=66 sq m
h= 2.9m
TSA of cylinder=2πr(r+h)
=2×(22/7)×2.1×(2.1+2.9)
=2×(22/7)×2.1×5
=66 sq m
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