Question : The length of a cuboid is 10 cm. If the breadth of the cuboid is half of its length and the height of the cuboid is twice its length, then what is the lateral surface area of the cuboid?
Option 1: 600 cm2
Option 2: 500 cm2
Option 3: 720 cm2
Option 4: 560 cm2
Correct Answer: 600 cm 2
Solution :
Given: The length of a cuboid is 10 cm.
The breadth of the cuboid is $\frac{10}{2}=5$ cm
The height of the cuboid is $2\times 10=20$ cm
The lateral surface area of the cuboid of length $l$, breadth $b$, and height $h$
$=2(lh+bh)$
$=2(10\times 20+5\times 20)$
$=2(200+100)$
$=600$ cm
2
Hence, the correct answer is 600 cm
2
.
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