Question

1. Eight cuboidal metal boxes each with
dimensions 60 cm x 45 cm x 30 cm are to be
painted. If the rate of painting is * 200 per mº,
find the total cost of painting,​

Answer 1

Correct option is

A

Rs.234

Total surface area of a cubiod is

=2(lb+bh+lh)

=2((60×45)+(60×30)+(45×30))=11700 cm ^2

 

1 m=100 cm

11700 cm=1.17 m ^2  

 

Rs.200 per m^2  

=200×1.17=Rs.234

Answer 2

Answer:

ᴛʜᴜɴᴅᴇʀsᴛᴏʀᴍs ᴅᴇᴠᴇʟᴏᴘ ɪɴ ʜᴏᴛ ᴀɴᴅ ʜᴜᴍɪᴅ ᴀʀᴇᴀs. ʜɪɢʜ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪɴ ᴛʜɪs ᴀʀᴇᴀs ᴄᴀᴜsᴇ ʜᴏᴛ ʜᴜᴍɪᴅ (ᴡɪᴛʜ ᴡᴀᴛᴇʀ ᴠᴀᴘᴏᴜʀs) ᴀɪʀ ᴛᴏ ʀɪsᴇ ᴜᴘ. sᴏ, sᴛʀᴏɴɢ ᴜᴘᴡᴀʀᴅ ʀɪsɪɴɢ ᴡɪɴᴅs ᴡɪᴛʜ ᴡᴀᴛᴇʀ ᴅʀᴏᴘʟᴇᴛs ᴀʀᴇ ɢᴇɴᴇʀᴀᴛᴇᴅ. ... ᴜᴘᴡᴀʀᴅ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴀɪʀ ᴀɴᴅ ᴅᴏᴡɴᴡᴀʀᴅ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴡᴀᴛᴇʀ ᴅʀᴏᴘs, ᴛᴏɢᴇᴛʜᴇʀ, ᴄᴀᴜsᴇ ʟɪɢʜᴛɴɪɴɢ ᴀɴᴅ sᴏᴜɴᴅ.