1. Skeleton Models(2)
Geometry

2. In each diagram the model shown is made from cane.
Find the total length of cane needed to make each model.
1. Cube
2. Cuboid
9.5cm
11.5cm
5.5cm
8.5cm
4. A right triangular prism.
3. Pyramid with a square base
9cm
7.5cm
15cm
17cm
8cm
21cm

3. In each diagram the model shown is made from cane.
Find the total length of cane needed to make each model.
5. Cuboid
6. A triangular prism
whose ands are equilateral
triangles
13.5cm
6cm
15.5cm
12cm
7cm
7. A square pyramid sitting on
top of a cuboid.
8. Model house structure
6.2cm
8.3cm
5.3cm
6.4cm
6.5cm
12.5cm
10cm
11cm

4. See next slide for question 10
9.5cm
8.6cm
2.7cm
3.5cm
7.6cm
9. Framework for a
model desk
See next slide for question 10

5. Main beam and side supports
Main beams
Side beams and legs
Side support
10.The diagrams show a
garden chair and the
parts which go together
to make the chair.
The table below
shows the length and
cost of each part.
Calculate
a) Total length of wood used
in making the chair.
b) Total amount of metal
used in the chair.
c) Cost of the chair shown
in the diagram above.
Main beam and side supports
are wood, side beams and
legs are metal.
Material
Length
Cost per unit
Main Beams
2.64m
₤5.58 per beam
Side supports
0.82m
₤3.50 per support
Side beams and legs
0.56m
₤2.55 per beam/leg