Question

two cubes each of side 30 cm are joined end to end find the surface area of the resulting cube​

Answer 1

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Answer 2

The resulted fighure is a cuboid where, h= 30, b=30 and l= 30+30 =60cm

Surface area = 2 (l+b) h

= 2 (60+30) 30

= 2 x 90 x 30

= 5400 cm sq.