Maths-
General
Easy

Question

The number of radians in a 720-degree angle can be written as a pi, where a is a constant. What is the value of a ?

The correct answer is: 4


    HINT – Use the fact that p = 180°
    SOLUTION – We know that p = 180°    ---- (1)
    We can write  720° = 4 cross times 180°
    rightwards double arrow720° = 4 cross times straight pi            ( - from (1) )
    rightwards double arrow720° = 4 straight pi
    Comparing with the expression given in the question,
    We get,  a = 4
    So, answer is 4

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