Question

if the total surface area of a cube is 54x^2 , find its lateral surface
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Answer 1

Answer: 36$x{2}$

Step-by-step explanation:

Given :

Total surface area = 54$x {2}$

$6a{2}$ = 54$x {2}$

a² = 9x²

Now lateral surface area= 4a²

This equals to:

= 4 × (3x)²

= 4 × 9x² = 36x²