If the length of a cuboid is 20 m, bread

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

If the length of a cuboid is 20 m, breadth is 5 m and height is 4 m, then find the length of diagonal of the cuboid.

Options:

12 m

21 m

18 m

24 m

Correct Answer:

21 m

Explanation:

We know that,

Diagonal of cuboid = \(\sqrt {l^2 + b^2 + h^2}\)

Length = 20 m

Breadth = 5 m

Height = 4 m

Diagonal of cuboid = \(\sqrt {20^2 + 5^2 + 4^2}\) = \(\sqrt {441}\) = 21 m