A solid cuboidal piece of wood measures 3 {\m} \times2.5 {\m}\times 8 {\cm}. Find the weight of the piece if 1 cubic {\cm} of wood weighs 9 grams.

Sainik School Entrance Exam 2019 Solved Paper

Question : 25 of 150

Marks: +1, -0

A solid cuboidal piece of wood measures

3 {\m} ×2.5 {\m}×

8 {\cm}

. Find the weight of the piece if 1 cubic

{\cm}

of wood weighs 9 grams.

Solution:

=l ×b ×h

=(3 ×100) ×(2.5 ×100) ×8

=600000 {\cm}^3

Given, weight of

1 {\cm}^3=9

grams
So, weight of

600000 {\cm}^3=5400000 {\gm}

=5400 {\kg}...... [∵ 1 {\kg}=1000 {\gm}]

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