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Mathematics

Grade9

Easy

Question

Find the lateral surface area of this figure.

100 cm²
120 cm²
15 cm²
75 cm²

hint Hint:

The Formula of the lateral surface area of cuboid is $2 h left parenthesis l space plus space b right parenthesis$ , where l is the length of the cuboid b is the breadth of the cuboid and h is the height of the cuboid.

The correct answer is: 100 cm²

The Formula of the lateral surface area of cuboid is $2 h left parenthesis l space plus space b right parenthesis$ , where l is the length of the cuboid b is the breadth of the cuboid and h is the height of the cuboid.
Step1: Calculating the Surface area of cuboid
Here we are given the length of the cuboid as $6 space c m$ and breadth of the cuboid as $4 space c m$ and height of the cuboid as $5 space c m$ . By putting the value of l, b, h in the formula, we will get the lateral surface area.
$2 h left parenthesis l space plus space b right parenthesis$
=> $2 cross times 5 cross times left parenthesis 6 plus 4 right parenthesis$
=> $100 space c m squared$
So, the lateral surface area of the cuboid is $100 space c m squared$

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