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If circumference of a circle is 6.28 cm then what is the radius of the circle?(a) 2 cm(b) 1 cm(c) 4 cm(d) 3 cmThis question was addressed to me in a national level competition.I want to ask this question from Applications of Linear Equation (Just Solving the Equations) in division Linear Equations in One Variable of Mathematics – Class 8

Answer»

Correct answer is (B) 1 cm

The explanation is: CIRCUMFERENCE of a CIRCLE = 2 × π × Radius

6.28 = 2 × 3.14 × Radius

Radius = 1.



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