Shape and Space 2
2 marks · NormalA square has sides of length 6 cm. Calculate the length of its diagonal to 3 significant figures.
(a)
[2 marks]
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8.49 cm (±0.01)
Common mistakes: Simply doubling side length; Not rounding to 3 s.f.
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Marking points
M1 (a) · 1 mark · Sets up diagonal using Pythagoras’ theorem.
A1 (a) · 1 mark · Diagonals = 8.49 cm, to 3 significant figures.
Worked solution