gbprulesmile gbprulesmile

27-06-2018
Mathematics

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What is the area of ΔABC? Round to the nearest tenth of a square unit.

3.9 square units
8.4 square units
11.8 square units
17.7 square units

What is the area of ΔABC Round to the nearest tenth of a square unit 39 square units 84 square units 118 square units 177 square units class=

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betharowan betharowan

27-06-2018

Draw a perpendicular segment from point C to the midpoint of AB. Using the trig sine function sin 80 = x/6 which gives 5.91 for the perpendicular segment. Using the formula A=1/2bh, A= 1/2 x5.91x2sqrt 2 A= 8.4

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