Question

What is the diameter, radius, r2, and circumference?
3 cm

Answer 1

see below

Explanation:

given:

radius of a circle = 3cm

find:

1. diameter

2. radius

3. r²

1) diameter = twice the radius = 2 r = 2 (3) = 6 cm

2) radius = 3 cm

3) r² = 3² = 9 cm