The inradius of an equilateral triangle

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

The inradius of an equilateral triangle is 5cm. What is the circumradius (in cm) of the same triangle?

Options:

10 cm

20 cm

5 cm

15 cm.

Correct Answer:

10 cm

Explanation:

The ratio of inradius to circumradius of an equilateral triangle is = 1 : 2

Therefore, if inradius = 5cm

Then, circumradius = 2× 5= 10cm.