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Area and Circumference of Circles worksheet

10 GCSE practice questions with answers, free to print. Every sheet is generated, so you can make a fresh one whenever you need it.

10 questions 23 marks Sheet 1
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  1. 2 marks

    Here is a round rug being made in a hallway.

    A circle with centre O and a radius of 12 cm markedO12 cm

    The radius of the circle is \(12\) cm.

    Find the area of the circle. Give your answer in terms of \(\pi\).

  2. 2 marks A circle with centre O and a radius of 5 cm markedO5 cm

    The circle has a radius of \(5\) cm.

    Work out its area. Give your answer correct to 1 decimal place.

  3. 2 marks A circle with centre O and the diameter AB marked as 14 cmABO14 cm

    \(AB\) is a diameter of the circle and \(AB = 14\) cm.

    Find the circumference of the circle. Give your answer in terms of \(\pi\).

  4. 2 marks A circle with centre O and its radius marked r cmOr cm

    The circumference of the circle is \(26\pi\) cm.

    Work out the radius of the circle.

  5. 3 marks
    (a)

    Here is a circle with centre \(O\). \(AB\) is a diameter and \(AB = 6\) cm.

    A circle with centre O and diameter AB of 6 cm, with the half above AB shadedABO6 cm

    The shaded region is a semicircle.

    Calculate the perimeter of the shaded semicircle. Give your answer in terms of \(\pi\).

    (b)

    Calculate the area of the shaded semicircle. Give your answer in terms of \(\pi\).

  6. 3 marks
    (a)

    \(OA\) and \(OB\) are radii of a circle with centre \(O\), and angle \(AOB = 90^\circ\).

    A circle with centre O and radius 12 cm, with the quarter OAB shadedABO12 cm90°

    \(OA = 12\) cm and the shaded region is a quarter of the circle.

    Work out the length of the arc \(AB\). Give your answer in terms of \(\pi\).

    (b)

    Work out the area of the shaded quarter circle. Give your answer in terms of \(\pi\).

  7. 3 marks
    (a)

    Dani's go-kart wheel has a diameter of \(40\) cm.

    A wheel drawn as a circle with its diameter marked 40 cmO40 cm

    Calculate how far the wheel travels in one complete turn. Give your answer correct to 1 decimal place.

    (b)

    Calculate how far the wheel travels in \(20\) complete turns. Give your answer in metres, correct to 1 decimal place.

  8. 2 marks

    The diagram shows a circular pond being made in a garden.

    A circle with centre O and a radius of 11 cm markedO11 cm

    The radius of the circle is \(11\) cm.

    Calculate the area of the circle. Give your answer in terms of \(\pi\).

  9. 2 marks A circle with centre O and a radius of 11 cm markedO11 cm

    The circle has a radius of \(11\) cm.

    Work out its area. Give your answer to 1 decimal place.

  10. 2 marks A circle with centre O and the diameter AB marked as 10 cmABO10 cm

    \(AB\) is a diameter of the circle and \(AB = 10\) cm.

    Calculate the circumference of the circle. Give your answer in terms of \(\pi\).

Answers

  1. \(144\pi\ \text{cm}^2\)
  2. \(78.5\ \text{cm}^2\)
  3. \(14\pi\ \text{cm}\)
  4. \(13\ \text{cm}\)
  5. (a) \((3\pi + 6)\ \text{cm}\)
    (b) \(\frac{9}{2}\pi\ \text{cm}^2\)
  6. (a) \(6\pi\ \text{cm}\)
    (b) \(36\pi\ \text{cm}^2\)
  7. (a) \(125.7\ \text{cm}\)
    (b) \(25.1\ \text{m}\)
  8. \(121\pi\ \text{cm}^2\)
  9. \(380.1\ \text{cm}^2\)
  10. \(10\pi\ \text{cm}\)

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