Question

The radius of circle F is 19 cm.

What is the length of its diameter?



A.
9.5 cm

B.
19 cm

C.
21 cm

D.
38 cm

Answer 1

38 cm
this is because radius is half of the diameter so diameter is twice the radius. Therefore, if the radius is 19 then double that which is 38 is the diameter

Answer 2

The diameter of the circle F is 38 cm .

Option (D) is correct .

Explanation:

As given

The radius of the circle F is 19 cm.

Definition of diameter

Diameter is defined as the distance fom one point of the circle passing through centre of circle to another point .

Diameter = 2 × Radius

= 2 × 19 cm

= 38 cm

Therefore the diameter of the circle F is 38 cm .

Option (D) is correct .