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Find the value of x. If necessary, round to the nearest tenth

Find the value of x. If necessary, round to the nearest tenth-example-1
User Duggulous
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That is in fact the answer to the question
User Migmaker
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A = 1/2bh
40 = 1/2 x^2
x^2 = 80
x = 8.9
User Joseph Caracuel
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