The diagram shows a compass radial survey of the field `ABCD`.
- Triangle `COB` has an area of 466 m².
- Find the size of acute angle `COB`, correct to the nearest degree. (2 marks)
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- A farmer wants to put a fence around the triangle `DOC`.
- Find the length of fencing required. Give your answer in metres correct to one decimal place. (3 marks)
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