A room is 12 m long, 9 m wide and 8 m high. What is maximum lengt

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Length and Angles

Multiple Choice Questions

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21.
A room is 12 m long, 9 m wide and 8 m high. What is maximum length of a rod that can be kept in the room ?

17m

16m

15m

14m

A.

17m

$Maximum length of rod = Length of diagonal = \sqrt{{(12)}^{2} + 9^{2} + 8^{2}} = \sqrt{144 + 81 + 64} = \sqrt{289} = 17 m$

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22.

If two complementary angles are in the ratio 2 : 3, then angles will be

$25 °, 65 °$
$108 °, 72 °$
$36 °, 54 °$
$40 °, 60 °$

2
3

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