Question

the lateral surface area of cube is 256cm². Find its total surface area.

Answer 1

lateral sur face area of cube is 4a^2 =256
a^2=256/4
a=8
total surface area of cube =6a^2
6×8×8=384
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Answer 2

lateral surface area of cube = 4a^2
256 = 4a^2
256/4 = a^2
64 = a^2
√64 = a
8 = a

Total surface area of cube = 6a^2
= 6 (8)square
= 6*64
= 384 cm square