Question

The Radius of the circle is 7.2 cm. What is the diameter of the circle and what is the circumference

Answer 1

diameter=14.4cm

circumference=14.4π or 44.24

Explanation:

the diameter is double the radius

7.2×2=14.4 is the diameter

to find the circumference it's d×π

14.4×π= 14.4π

14.4π=45.238934211693 or 44.24 to 2dp

Answer 2

Circumference of circle =2×pi×r=2×3.14×7.2=2×22.608=45.216cm

Explanation: