Plane geometry in solids; project work
Answers are for parents and teachers.
1
A cuboid has edges 6, 6 and 7 cm. How long is its diagonal (cm)?
11
2
A cuboid has a 9 × 12 cm base and diagonal 17 cm. What is its height (cm)?
8
3
How many faces, edges and vertices does a square-based pyramid have?
5 faces, 8 edges, 5 vertices
4
A room is 6 m by 4 m and 3 m high. Doors and windows take 8 m². What wall area is to be painted (m²)?
52
5
Painting should be done by adults: why is an adult's help needed when working with paint and ladders?
Paint fumes can be harmful and there is a risk of falling from a ladder.