Answer:
9
Step-by-step explanation
We need to utilise the circumference of a circle formula which is
→ Circumference of a circle = 2 × π × r where 'r' is the radius
We will need to set up an equation where 56.52 is the answer and we want to work out the value of 'r' but we need to remember that what we do to one side we must do to the other so, if we divide by π on one side we must also divide by π on the other side because if we only do it on side then the whole equation will changed and get a completely different solution than we wanted so,
→ 2 × π × r = 56.52
⇒ Divide both sides by 2 to isolate π × r
→ π × r = 28.26
⇒ Divide both sides π to isolate 'r'
→ r = 8.99543738355
The radius of the circle if it’s circumference is 56.52 is 8.99543738355