Question

3. Find the surface area of a cube whose 40 m.​

Answer 1

Answer:

surface area of cube = 6 l²

                                   = 6 × 40 × 40

                                   = 9600 m²

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Answer 2

$side = 40cm \\ tsa = 6 {a}^{2} \\ tsa = 6 \times 1600 = 9600 {cm}^{2} \\ lsa = 4 {a}^{2} \\ lsa = 4 \times 1600 = 6400 {cm}^{2}$

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