Find the Diameter or Radius when given the Circumference

Maths

Rearrange the formula that finds the circumference of a circle to make the ‘diameter’ the subject.

The circumference of a circle is 35πcm. What is length of the radius?

The circumference of this circle is 30cm. What is the diameter to 3 significant figures?

The circumference of this circle is 30cm. What is the radius to 3 significant figures?

Find the length of the circumference in terms of pi.

Find the length of the circumference to three significant figures.

Find the length of the circumference to 3 significant figures.