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Q18: Question – Paper 1 – June 2018
Q18: Question – Paper 1 – June 2018
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Question
The diagram below shows the cross section of the tunnel.
- AD is a semicircular arc of radius 10 cm
- BC is a semicircular arc of radius 7 cm
- The length of the tunnel is 30 cm
Work out the total area of all six faces of the tunnel.
Give your answer in terms of π.
[5 marks]