1.

A wall
is 3,25 m high and 6,60 m long and is 2 bricks wide. A brick is 30 cm long and 50 mm high.

Calculate
the number of bricks in the wall by dividing the area of the wall by the area of a brick.

2.

Calculate
the area of the following 2D-figures:

2.1

a rectangle
with length 45 mm and breadth 7,3 mm.

2.2

a triangle
with base 45 cm and height 22 cm

2.3

a square
with side 72 cm

2.4

a circle
with diameter 3,14 m

3.

Calcuate the

2

3.1

side of
a square with an area of 552,25 m

2

3.2

length of
a rectangle with breadth 3,45 m and an area 20,769 m

2

3.3

height of
a triangle with base 28,4 cm and an area of 249,92 cm

2

3.4

base of
a triangle with height 1,26 m and an area of 0,4095 m

2

3.5

diameter
of a circle with area 124,690 cm

2

3.6

radius
of a circle with area 3848,45 m

4.

Calculate the
surface area and volume of the following 3D-bodies:

4.1

a cube
with side 34 mm.

4.2

rectangular prism
with length 65 cm, breadth 40 cm and height 24 cm.

4.3

a sphere
with diameter 56 mm

4.4

a cone
with height 32 cm and radius of the base 21 cm

4.5

a cylinder
with length 450 mm and diameter 6 cm.

2

5.

The surface
area of a cube is 1350 cm . Calculate the

5.1

length
of a side.

5.2

volume of
the cube.

2

6.

The surface area
of a sphere is 314,159 cm . Calculate the

6.1

diameter of
the sphere.

6.2

volume of
the sphere.

3

7.

The volume
of a sphere is 24 429,024 cm . Calculate the

7.1

radius of
the sphere.

7.2

surface
area of the sphere.

8.

You have
to paint the outside of a rectangular tank.

The
measurements are: length = 20 m, breadth = 15 m and height = 2,4 m.

8.1

Calculate the
surface area of the tankthat has to be painted.

8.2

One litre
of paint covers an area of 2,85 square metres. Calculate the volume of paint needed,

correct
to one litre.

8.3

Consider the
following:

Volume of container, in litre | 1 | 2 | 5 | 20 |

Cost of container, in Rand | 28,25 | 56,50 | 127,10 | 372,00 |

How many of
each kind ot container must you buy so that the cost will be a minimum?