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Question

A circle has a radius of 7 cm. What is the nature of the value of its circumference?


A

Irrational

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B

Rational

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C

Integer

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D

Whole number

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Solution

The correct option is A

Irrational


2πr is the formula for the calculation of circumference, where r is the radius of the circle. Here, π, which is irrational is getting multiplied with 2r, which is rational, thus, the resultant number is an irrational number. Hence, the value of circumference is irrational.


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