Question

C is a circle with radius r. Which of the following is true? Select all that apply
A. The diameter of C is 2r
B.the circumference of C is pi*r
C: the circumference of C is 2pi*r
D. One quarter of the circle has length (pi*r)/4
E. One quarter of the circle has length(pi*r)/2

Answer 1

Answer:

A and C and E are correct

Step-by-step explanation:

Circumference = 2*pi*r

Answer 2

C is a circle with a radius r. The correct statements are; A. The diameter of C is 2r , C: The circumference of C is 2pi*r,  E. One-quarter of the circle has a length(pi*r)/2.

What is the area of the circle?

Supposing that a considered circle has its radius of 'r' units.

Then, its area and circumference are given as:

$Area = \pi r^2 \: \rm unit^2\\ \\Circumference = 2\pi r \: \rm units$

The radius of a circle is half of its diameter.

Therefore, the correct statements are;

A. The diameter of C is 2r

C: The circumference of C is 2pi*r

E. One-quarter of the circle has a length(pi*r)/2

Learn more about the equation of a circle here:

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