Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Geometry

Question:

A triangle with the lengths of its sides proportional to the numbers 7, 24 and 30 is:

Options:

acute angled

obtuse angled

not possible

right angled

Correct Answer:

obtuse angled

Explanation:

Concept Used

\(\Delta \)ABC has sides as a, b, c if \( {a }^{2 } \) + \( {b }^{2 } \) \(<\) \( { c}^{ 2} \) then \(\Delta \)ABC is an obtuse angled triangle.

Solution

\( {7p }^{2 } \) + \( {24p }^{2 } \) = \( { 625}^{ 2} \)

\( {30p }^{2 } \) = \( {900p }^{2 } \)

As \( {7p }^{2 } \) + \( {24p }^{2 } \) \(<\) \( {30p }^{2 } \), we can conclude that it is an obtuse angled triangle.

Therefore, it is an obtuse angled triangle.