Question

derive the formula for the curved surfed area and total surface area of a frustum of a cone

Answer 1

Curved surface area=22/7×r×l

Total surface area = 22/7×r×l+22/7×r×r

Answer 2

Answer:

ᴛᴏ ғɪɴᴅ ᴛʜᴇ ᴄᴜʀᴠᴇᴅ sᴜʀғᴀᴄᴇ ᴀʀᴇᴀ ᴏғ ᴀɴʏ ᴄᴏɴᴇ, ᴍᴜʟᴛɪᴘʟʏ ᴛʜᴇ ʙᴀsᴇ ʀᴀᴅɪᴜs ᴏғ ᴛʜᴇ ᴄᴏɴᴇ ʙʏ ᴘɪ. ɴᴏᴡ ᴍᴜʟᴛɪᴘʟʏ ʏᴏᴜʀ ᴀɴsᴡᴇʀ ʙʏ ᴛʜᴇ ʟᴇɴɢᴛʜ ᴏғ ᴛʜᴇ sɪᴅᴇ ᴏғ ᴛʜᴇ ᴄᴏɴᴇ. ɪғ ʏᴏᴜ ᴡᴀɴᴛ ᴛᴏ ᴛᴏᴛᴀʟ sᴜʀғᴀᴄᴇ ᴀʀᴇᴀ ʀᴇᴍᴇᴍʙᴇʀ ᴛᴏ ᴀᴅᴅ ᴏɴ ᴛʜᴇ ᴀʀᴇᴀ ᴏғ ᴛʜᴇ ʙᴀsᴇ ᴏғ ᴛʜᴇ ᴄᴏɴᴇ.

Thanks ❤️

Ashley ❤️