3.1 Geometry Toolkit

The lake behind a dam has an area of 55 hectares.
When the gates in the dam are open, water flows out at a rate of 75 000 litres per second.

[1]

.......................................... cm [3]

Here is a cube with edge length cm

One diagonal is shown.

The total length, in centimetres, of the edges of the cube is a multiple of 18

Circle the correct statement.

is a whole number

is not a whole number

might be a whole number

The cross section of a prism has  sides.

Circle the expression for the number of edges of the prism.

A square has an area of 0.25 square metres.

Circle the length, in centimetres, of one side of the square.

Circle the volume that is the same as 

Change 90 km/h to m/s.

.......................................... m/s

The diagram shows a cuboid.
= 8 cm,  = 4 cm and = 5 cm.

Write down the number of planes of symmetry of this cuboid.

Change 457000 cm² into m².
 

 ............................................. m²

The diagram shows a pyramid with a square base.
The triangular faces are congruent isosceles triangles.

Write down the number of planes of symmetry of this pyramid.