PISA 2012 Released Items
Question 3: POWER OF THE WIND
PM922Q03 – 0 1 9
Zedtown has decided to erect some E-82 wind
power stations in a
square field
(length = breadth = 500 m).
According to building regulations, the minimum
distance between the
towers of two wind power
stations of this model has to be five times the
length of a rotor blade.
The town mayor has made a suggestion for how
to arrange the wind power stations in the field.
This is shown in the diagram opposite.
Explain why the town mayor’s suggestion does
not meet the building regulations. Support your
arguments with calculations.
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