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Q18: Answers – Paper 1 – June 2018
Q18: Answers – Paper 1 – June 2018
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Here is a tunnel for a toy train.
Here is a tunnel for a toy train.
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.
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]