Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Geometry

Question:

The circumference of the two circles is 264 m and 308 m respectively. What is the difference between the area of the larger circle and the smaller circle?

Options:

2002 m2

2010 m2

1890 m2

1990 m2

Correct Answer:

2002 m2

Explanation:

2\(\Pi \)R1 = 264

= R1 = (264 x 7)/(2 x 22)

= R1 = 42 m

= 2\(\Pi \)R2 = 308

= R2 = (308 x 7)/(2 x 22)

= R2 = 49 m

Therefore, required difference = \(\Pi \) x (\( {R2 }^{ 2} \) - \( {R1 }^{ 2} \))

= \(\Pi \) x (R2 x R1)(R2 - R1)

= \(\frac{22}{7}\) x 91 x 7 = 2002\( {m }^{2 } \)

Therefore, required difference = 2002\( {m }^{2 } \).