Mathematics, 29.04.2021 14:00 jlulu398

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 10cm bc is a semicircular arc wof redius 8cm the length of the tunnel is 30cm work out the total surface area of all six faces of the tunnel give your answer in terms of pi

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here is a tunnel for a toy train the diagram below shows the cross section of the tunnel ad is a sem...

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