Question

1. Which is the diameter of a circle with a circumference of 15 cm?

A. 7.5/π cm

B. 15π cm

C. 15/π cm

D. 30π cm


2. Which statement is true about the circumference of a circle?


A. It is about twice the radius.


B. It is about half the diameter.


C. It is about three times the radius.


D. It is about three times the diameter.

Answer 1

The first one is 15/pi

Explanation:

Because circumference/diameter is pi so is circumference is 15 cm then 15/d=pi so d=15/pi

Answer 2

number 1 is C
number 2 is D