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  • Two identical cubes each of volume 64 cm^3 are joined together end to end. What is the surface area of the resulting cuboid?

Two identical cubes each of volume 64 cm3 are joined together end to end. What is the surface area of the resulting cuboid?

Answers (1)

It is given that the volume of the cube = 64 cm3

                        a^3=64cm^3          ( Because the volume of cube = a3 )

                        a^3=4^3

                        a=4

            So the sides of the two cubes are 4 cm

            The cuboids are formed by joining two cubes.

           

            The surface area of the cuboid =2(lb +bh+hl)

                        =2(8 \times 4 + 4 \times + 4 \times 8)

                        =2(8 \times 4 +4 \times 4 + 4 \times 8)

                        =2(32+16 +32)

          =2(80)=160cm^2  

Posted by

infoexpert21

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