Question

Two cubes of each 15 cm edge are joined end to end.find the surface area and volume of the resulting cuboid

Answer 1

Answer :

CSA of 2 cubes = CSA of cuboid

So,

CSA of one cube = 6a^

= 6×15×15

= 1350 cm^

:. CSA of two cubes = 1350 +1350

= 1700cm^

:. CSA of cuboid = 1700cm^

Volume of 2cubes =volume of cuboid

So ,

Volume of one cube = a cube

=15 ×15 ×15

= 3375 cm cube

Volume of 2cubes = 3375 +3375

= 6750cm cube

:. Volume of cuboid = 6750 cm cube

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