Question

9. A solid has 12 faces and 20 edges. How many vertices does it have?​

Answer 1

Answer:

ʜᴇʀᴇ ᴜs ʏᴏᴜʀ ᴀɴsᴡᴇʀ ⬇️

Step-by-step explanation:

ᴇᴜʟᴇʀ's ғᴏʀᴍᴜʟᴀ ғᴏʀ ᴀɴʏ ᴘᴏʟʏʜᴇᴅʀᴏɴ =ғ +ᴠ = ᴇ = 2

ᴡʜᴇʀᴇ, ғ = ғᴀᴄᴇs ᴀɴᴅ ᴠ = ᴠᴇʀᴛɪᴄᴇs ᴀɴᴅ ᴇ = ᴇᴅɢᴇs

ɢɪᴠᴇɴ, ғ = 12,ᴠ =20 ᴀɴᴅ ᴇ = ?

ᴛʜᴇʀᴇғᴏʀᴇ,

12 + 20 − ᴇ = 2

∴32 − ᴇ = 2

∴ᴇ = 30

sᴏ, ɪғ ᴀ sᴏʟɪᴅ sʜᴀᴘᴇ ʜᴀs 12 ғᴀᴄᴇs ᴀɴᴅ 20 ᴠᴇʀᴛɪᴄᴇs, ᴛʜᴇɴ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴇᴅɢᴇs ɪɴ ᴛʜɪs sᴏʟɪᴅ ɪs 30.

Answer 2

Answer:

32 =vertices

hope it help you . if not then sorry