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Maths I

Measure and Shape

1.

Work out the circumference of this circle. Give the answer to 1 decimal place.

15.7cm

31.4cm

62.8cm

2.

Work out the circumference of this circle. Give the answer to 2 d.p.

3.14cm

6.28cm

12.56cm

3.

Work out the area of this circle. Give the answer to 2 d.p.

12.56cm^{2}

50.24cm^{2}

200.96cm^{2}

4.

254.34cm^{2}

1017.36cm^{2}

4069.44cm^{2}

5.

Work out the perimeter of this semicircle. Give the answer to 2 d.p.

21.42cm

30.84cm

49.68cm

6.

Work out the area of this semicircle. Give the answer to 4 d.p.

0.7693m^{2}

1.5386m^{2}

3.0772m^{2}

7.

Work out the area of this shape. Give the answer to 2 d.p.

180m^{2}

236.52m^{2}

293.04m^{2}

8.

Work out the perimeter of this shape. Give the answer to 2 d.p.

25.42cm

34.84cm

53.68cm

9.

Helen's kitchen window is in the shape of a rectangle with a semicircle at the top. What is the total area of the window? Give the answer to 4 d.p.

2.7252m^{2}

3.2904m^{2}

4.4208m^{2}

10.

A running track is marked as shown.

The straight part of the track is 100m long and the width across the track is 62m. The ends of the track are semicircular.

Calculate the perimeter of the inside of the track. Give the answer to 2 d.p.

294.68m

297.34m

394.68m