Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

Find the area of the sector of a circle with radius 4 cm and angle 30°.

Options:

7.186 cm2

6.186 cm2

4.186 cm2

5.186 cm2

Correct Answer:

4.186 cm2

Explanation:

We know that,

Area = \(\frac{ θ }{360°}\)πr2

Radius = 4 cm

Angle = 30°

Area = πr2 θ/360°

= 3.14 x 42 x \(\frac{ θ }{360°}\)

= 3.14 x \(\frac{ 4 }{3}\) = 4.186 cm