Question

Find the edge of a cube whose lateral surface area is 1156cm square

Answer 1

CSA of a cube = 1156 sq.
4a sq. = 1156
a sq. = 1156/4
a sq. = 289
a = 17 cm



therefore the edge of the cube = 17 c

Answer 2

let the edge of cube be 'a'

L.S.A of cube is 4a²

given lateral surface area is 36cm²

4a²=36

a²=9

a=3

the edge is 3 cm

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