PPSHS - Year 7 Maths: Circumference

Which of the following correctly describes the diameter of a circle?

• Distance around a circle.

• Distance from the centre of a circle.

• Distance across a circle.

• The surface area inside the circle.

Which of the following correctly describes the radius of a circle?

• Distance around a circle.

• Distance from the centre of a circle.

• Distance across a circle.

• The surface area inside the circle.

Which of the following correctly describes the circumference of a circle?

• Distance around a circle.

• Distance from the centre of a circle.

• Distance across a circle.

• The surface area inside the circle.

Which of the following correctly describes the area of a circle?

• Distance around a circle.

• Distance from the centre of a circle.

• Distance across a circle.

• The surface area inside the circle.

• It expresses the ratio of the circumference to the distance around a circle.

• It represents the ratio of the circumference to the diameter of a circle.

• It represents the ratio of the circumference to the radius of a circle.

• It expresses the ratio of the circumference to the area of a circle.

Using a calculator, find the circumference of this circle,

correct to 2 decimal places.

• 76.97m

• 38.48m

• 21.99m

• 11m

Using a calculator, find the circumference of

this circle, correct to 2 decimal places.

• 12.57cm

• 25.13cm

• 276.46cm

• 138.23cm

Name the features of this circle.

• a=diameter; b=circumference; and c=radius

• a=circumference; b=radius; and c=diameter

• a=radius; b=diameter; and c=circumference.

• a=diameter; b=radius; and c=circumference.

A water tank has a diameter of 3.5m. Find the circumference, correct to 1 decimal place.

• 38.5m

• 11.0m

• 22.0m

• 9.6m

A garden has a radius of 29m. Calculate the circumference,

correct to 2 decimal places.

• 182.21m

• 2642.08m

• 364.42m

• 10568.32m