Question

The circumference of a circle is 62.8 centimeters. What is the circle's radius?

C=62.8 cm
Use 3.14 for ​.
centimeters

Answer 1

Hello!

To solve this exercise, we must use the formula below:

`\mathrm{C=2\cdot\pi\cdot r}`

• C = 62.8cm
• π = 3.14
• r = ?

Knowing these values, let's replace them in the formula to obtain r:

`\mathrm{62.8=2\cdot\ 3.14\cdot r}\\\mathrm{62.8=6.28r}\\\mathrm{6.28r=62.8}\\\\\mathrm{r=(62.8)/(6.28)}\\\\\boxed{\mathrm{r=10}}`

So, the radius of this circle is 10cm.

Hope this helps!