Foundation

Find the Diameter or Radius when given the Circumference

Foundation

Find the Diameter or Radius when given the Circumference

Lesson details

Key learning points

  1. In this lesson, we will find the diameter or radius of a circle when given the circumference. This lesson will involve rearranging the formula for the circumference of a circle.

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4 Questions

Q1.
Find the length of the circumference in terms of pi.
A
B
C
Correct answer: D
Q2.
Find the length of the circumference to three significant figures.
A
B
Correct answer: C
D
Q3.
Find the length of the circumference in terms of pi.
A
B
C
Correct answer: D
Q4.
Find the length of the circumference to 3 significant figures.
Correct answer: A
B
C
D

4 Questions

Q1.
Rearrange the formula that finds the circumference of a circle to make the ‘diameter’ the subject.
A
B
C
Correct answer: D
Q2.
The circumference of a circle is 35πcm. What is length of the radius?
A
B
C
Correct answer: D
Q3.
The circumference of this circle is 30cm. What is the diameter to 3 significant figures?
A
Correct answer: B
C
D
Q4.
The circumference of this circle is 30cm. What is the radius to 3 significant figures?
Correct answer: A
B
C
D

Lesson appears in

UnitMaths / Circles