Area and Circumference of a Circle Quiz

The diameter of a circle is the distance from the centre of the circle to any point on the circle?

Units of area are always written as squares for e.g. mm 2, cm 2, m 2 e.t.c.

Find the area of a circle with a diameter of 20 cm. Give the answer correct to 1 decimal point (DP).

Find the area of a circle with a radius of 12 cm. Give your answer correct to 3 significant figures (SF).

Find the area of a circle with a diameter of 12 m. Give the answer correct to 1 decimal place (DP).

Find the area of a circle with a radius of 50 mm. Give your answer correct to 4 significant figures (SF).

To find the area of a semi-circle you can use the following formula: 1/2 x π x r 2

Find the circumference of a wheel with a diameter of 50 cm. Give your answer correct to 4 significant figures (SF).

A plate has a radius of 15 cm. Find the circumference of the plate and give your answer correct to 1 decimal place (dp)

A wheel has a radius of 300 mm. Find the circumference of the wheel and give your answer correct (to 4 SF)