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A cuboid whose length, breadth and height are 15 mm, 10 mm and 20 mm respectively, then its surface area would be:

A cuboid whose length, breadth and height are 15 mm, 10 mm and 20 mm respectively, then its surface area would be: Correct Answer 13 cm<sup>2</sup>

If we take the length of the cuboid as l, breadth as b and the height as h, then

Surface Area of a Cuboid = 2(lb + bh + hl)

A = 2 mm2 = 1300 mm2 = 13 cm2

Use 1 cm = 10 mm

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