Skeleton Models(2)

Geometry

In each diagram the model shown is made from cane. Find the total length of cane needed to make each model.

1. Cube

9.5cm

2. Cuboid

11.5cm

5.5cm

8.5cm

3. Pyramid with a square base

9cm

7.5cm

7.5cm

4. A right triangular prism.

15cm

17cm

8cm

21cm

5. Cuboid

In each diagram the model shown is made from cane. Find the total length of cane needed to make each model.

13.5cm

6cm

15.5cm

6. A triangular prismwhose ands are equilateraltriangles

12cm7cm

7. A square pyramid sitting on top of a cuboid.

6.5cm

12.5cm

10cm

11cm

8. Model house structure

6.2cm

8.3cm

5.3cm

6.4cm

9. Framework for a model desk

9.5cm

8.6cm

2.7cm

3.5cm

7.6cm

See next slide for question 10

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.

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

Calculatea) 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 beams

Side beams and legsSide support