Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

Find the length of the longest bamboo pole that can be placed in a room 16 m long, 12 m broad and 10 m high.

Options:

$10\sqrt{10}$ cm

$5\sqrt{5}$ cm

$10\sqrt{5}$ cm

$4\sqrt{5}$ cm

Correct Answer:

$10\sqrt{5}$ cm

Explanation:

The length of the room = 16

Breath of the room = 12

Height of the room = 10

The length of the bamboo that can be placed inside this room is given by = \(\sqrt {l^2 + b^2 + h^2}\)

= \(\sqrt {16^2 + 12^2 + 10^2}\)

= \(\sqrt {256 + 144 + 100}\) = \(\sqrt {500}\)

The length of the bamboo that can be placed inside this room is = 10\(\sqrt {5}\)