Question

3) d = 5 cm.

Calculate the circumference of the circle.
(it isn't 15.7cm)

4) d = 6 m.

Calculate the circumference of the circle.
(it isn't 18.84)

Answer 1

Explanation:

Example for my opinion

3) 2r = 5 cm

2 pi r = 5 × 3.14 = 15.7