How many rugby pitches could be made out of the plastic?

What is the diameter of the plastic cushions?
Which is thicker: a penny or the plastic?
A penny
The plastic
Write in the missing words in the following part.
And inside these walls and ceiling – nothing but . There is nothing else like it. Who up with this amazing building?
Tick the jobs which are NOT mentioned?
architect engineering team leader bricklayer structure engineer fire fighter
fire engineer rigger builder building modeller environmentalist
environmental engineer project manager
Which adjective doesn’t the speaker use for describing the visions of the engineering team?
extraordinary
astonishing
original
apparently impossible