Q14 of 94 Page 228

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

We know that,

Surface area of cuboid = 2 (lb + bh + hl)


Therefore,


Area of the cardboard required to make a box = 2 (23 × 15 + 15 × 8 + 25 × 8)


= 2 (375 + 120 + 200)


= 1390 cm2


Hence, option B is correct

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