The dimensions of a cuboid are in the ratio 3:2:2 and the lateral surface area of cuboid is 2000m^2 . The outer surface of the cuboid is painted with coloured enamel at the rate of Rs 8 per m square. Find the total cost of painting the outer surface of the cuboid
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αɳรωεɾ:-
➡️Lᴇᴛ ʟᴇɴɢᴛʜ : ʙʀᴇᴀᴅᴛʜ : ʜᴇɪɢʜᴛ = 1 : 2 : 3
➡️ ʟ =x , ʙ = 2x , ʜ = 3x
➡️TSA ᴏғ ᴀ ᴄᴜʙᴏɪᴅ = 2(ʟʙ+ʙʜ+ʟʜ)
➡️=2(x×2x+2x×3x+x×3x)
➡️=2(2x2+6x2+3x2)
➡️88ᴍ2=22x2ᴍ2
➡️x2=2288ᴍ2ᴍ2
➡️∴x=±2
➡️Sᴏ ᴛʜᴇ ᴅɪᴍᴇɴsɪᴏɴs ᴀʀᴇ 2×4×6
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