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The area of the cardboard needed to make a box of size 25cm × 15cm × 8cm will be

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The area of the cardboard needed to make a box of size 25cm × 15cm × 8cm will be

(a) 390cm2 (b) 1390cm2 (c) 2780cm2 (d) 1000cm2

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Best answer

(b) 1390 cm2

Explanation:

We know that total surface area of cuboid= 2(l b + b h + h l)

= 2 (375 + 120 + 200)

= 1390

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