A box has length, breadth and height of 10 cm,20 cm and 5 cm respectively. The lateral surface area of cuboid is:

100

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200

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300

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400

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Solution

The correct option is C
300

Given l = 10 cm, b = 20 cm and h = 5 cm

The lateral surface area of cuboid= 2h(l+b) = 300 $c m^{2}$

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Question 31

What will be the area of the largest square that can be cut - out of a circle of radius 10 cm?

(a) $100 c m^{2}$ (b) $200 c m^{2}$
(c) $300 c m^{2}$ (d) $400 c m^{2}$

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