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A triangular garden bed is set out. In triangle ABC, side AB = 17 m, side BC = 13 m, and the angle ABC = 70°.

Find the area of the triangle, correct to one decimal place (in square metres).

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Worked solution — answer: 103.8

A = ½ab sin C

= ½ × 17 × 13 × sin 70°

= 103.8 m²

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