Question

a sphere has a radius of 3 m. calculate its diameter.
a. 3 m c. 12 m
b. 6 m d. 10 m

please select the best answer from the choices provided

a
b
c
d

Explanation:

Step1: Recall diameter formula

For a sphere (or any circle - related shape), the diameter \( d \) is related to the radius \( r \) by the formula \( d = 2r \).

Step2: Substitute radius value

Given that the radius \( r = 3\space m \), substitute into the formula: \( d=2\times3 = 6\space m \).

Answer:

B. 6 m