Question

a metallic sphere of radius 4.2 cm is melted and recast into shape of a cylinder of radius 6 cm find the height of the cylinder

Answer 1

Here is your answer Dear!!

Answer 2

ɪғ ᴀ sᴏʟɪᴅ ɪs ʀᴇᴄᴀsᴛᴇᴅ ɪɴ ᴀɴʏ ᴏᴛʜᴇʀ sᴏʟɪᴅ ᴛʜᴇ ᴠᴏʟᴜᴍᴇ ʀᴇᴍᴀɪɴs ᴛʜᴇ sᴀᴍᴇ.

sᴏ,ᴠᴏʟ.ᴏғ sᴘʜᴇʀᴇ=ᴠᴏʟ. ᴏғ ᴄʏʟɪɴᴅᴇʀ

•4/3πʀ ᴄᴜʙᴇ= 2πʀ sϙᴜᴀʀᴇ ×ʜ 4/3×22/7×42/10×42/10×42/10 = 2×22/7×6×6×ʜ

ʜ= 98.784/36

ʜ=2.744