Question

If the total surface area of a cube is
864 sq.cm, find its lateral surface area.​

Answer 1

Total Surface Area of Cube = 6a²

Lateral Surface Area of Cube = 4a²

Given that,

TSA = 864 m²

⇒ 6a² = 864 m²

⇒ a² = 864 / 6 = 144

⇒ a = √144 = 12 m

Hence LSA will be:

⇒ LSA = 4a²

⇒ 4 ( 12 )²

⇒ 4 × 144

⇒ 576 m²

Answer 2

Step-by-step explanation:

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