The diameter of a semi circle is 5.6 m.

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Geometry

Question:

The diameter of a semi circle is 5.6 m. What is its perimeter (in m, correct to one decimal place)? (Take $ \pi = \frac{22}{7}$)

Options:

11.2

8.8

14.4

17.6

Correct Answer:

14.4

Explanation:

We know that,

Circumference of a semicircle = πr + 2r

We have,

Diameter of a circle = 5.6m

Then, Radius of semicircle = 5.6/2 = 2.8 m

Circumference of a semicircle = 22/7 × 2.8 + 2 × 2.8 = 14.4 m