What is the length of the longest pole which can be kept in a room 12 m long, 4

Question

What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high?

Options:

A . 10 cm

B . 12 cm

C . 15 cm

D . 13 cm

Answer: Option D

d²
= 12² + 4² + 3² = 13

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