Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

If the areas of three adjacent faces of a cuboidal box are 729 cm2, 529 cmand 289 cm2 , respectively, then find the volume of the box.

Options:

10557 cm3

10560 cm3

10555 cm3

10551 cm3

Correct Answer:

10557 cm3

Explanation:

We know that,

Area of single cuboidal face = l × b,

Volume of Cuboid = l × b × h 

We have,

Areas of 3 adjacent faces = 729 cm2, 529 cm2, and 289 cm2 

According to the question, 

 l × b = 729

b × h = 529

h × l = 289

l × b × b × h × h × l = 729 × 529 × 289 

l2 × b2 × h2 = 729 × 529 × 289 

l × b × h = \(\sqrt {729×529×289}\)

= l × b × h = 10557