CTET Class I to V 2016 Feb Paper

Question : 54 of 150

Marks: +1, -0

A cuboidal box is 13 cm long, 11 cm broad and 9 cm high. A cubical box has side 12 cm. Tanu wants to pack 3060 cubes of side 1 cm in these boxes. The number of the cubes left unpacked in these boxes is

Validate

Solution:

Volume of cuboidal box

=13 × 11 × 9=1287 {cm}^{3}

Volume of cubical box

=(12)^{3}=1728 {cm}^{3}

Total volume of both boxes

=1287+1728=3015 {cm}^{3}

Volume of each small cube

=(1)^{3}=1 {cm}^{3}

Total number of cubes packed in these boxes

=\;{3015}/{1}=3015

Hence, number of cubes lest

=3060-3015=45

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