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DᴀʀᴋPᴀʀᴀᴅᴏx

[tex]\huge \bf༆ Answer ༄[/tex]

Here's the solution ~

  • 0.5 ft = 12 × 0.5 = 6 inches

  • 1.5 ft = 0.5 × 3 ft = 6 × 3 = 18 inches

Surface are of cuboid is : -

  • [tex] \sf2(lb + bh + lh)[/tex]

  • [tex]2(4 \times 6) +( 6 \times 18) + (4 \times 18)[/tex]

  • [tex] \sf2[24 + 108 + 72][/tex]

  • [tex] \sf2(204)[/tex]

  • [tex] \sf408 \: \: inches {}^{2} [/tex]