Question

6. Derive the formula for the curved surface area and total surface area of the frustum.
7. Derive the formula for the volume of the frustum of a cone.



please solve both question..if u don't know .toh answer mat dena....other wise ill report.​

Answer 1

Answer:

csa of frustum -πl(R+r)

tsa of frustum -πl(R+r)+πR^2+πr^3

volume of cone- 1/3× πr^3

please mark as brainlist answer please plzzz

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 ❤️