Cambridge International Mathematics

Mensuration (length and area) (Chapter 9) 207

Review set 9B

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1aConvert:

i 3000 mm^2 to cm^2 ii 40 000cm^2 to m^2 iii 600 000m^2 to ha

b How many 80 cm by 40 cm rectangles can be cut from curtain material that is 10 mby 2 m?

2 Calculate the area in hectares of a rectangular field with sides 300 m and 0 : 2 km.

3 Find the perimeter of:

abc

4 Find the area of:

abc

5 A sector of a circle has radius 12 cm and angle 135 o.

a What fraction of a whole circle is this sector?

b Find the perimeter of the sector.

c Find the area of the sector.

6 A circle has circumference of length 40 : 8 m. Find its:

a radius b area.

7 Find the formula for the areaAof:

abc

8

40°

8.4 cm

6cm 20cm

16 cm

140°

20 cm

10 m

16 m 10 cm

2m

xm

c

a

b

h

2 x

8cm

7cm

Find in terms of¼the perimeter and area of the

shaded region:

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Y:\HAESE\IGCSE01\IG01_09\207IGCSE01_09.CDR Thursday, 2 October 2008 11:56:16 AM PETER