Question

The circumference of a circle of diameter d is

1 point

(a) πd

(b) 2πd

(c) 1/2 πd

(d) 2π​

Answer 1

The circumference of a circle of diameter d is 2π.

Hope it will be helpful ✌✌

Answer 2

The circumference of a circle of diameter d is 2πd.

The circumference of a circle can be calculated using the formula:

C = π * d, where "C" represents the circumference, "π" is the mathematical constant pi= 3.14), and "d" is the diameter of the circle.

So, in the given scenario, if the diameter of the circle is "d",

the circumference would be

C = π d = π d

= 2π $(d/2)$

=  2πd.

The options represent different formulas for the circumference of a circle.

• Option (a) states that the circumference of a circle is equal to π times the diameter of the circle, denoted as C = πd.

• Option (b) states that the circumference of a circle is equal to 2 times π times the radius of the circle, denoted as C = 2πr where r is the radius.

• Option (c) states that the circumference of a circle is equal to 1/2 times π times the diameter of the circle, which is incorrect.

• Option (d) states that the circumference of a circle is equal to 2π which is incorrect.

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