A = 1/2bh
47 = 1/2(x)(x)
47 = 1/2 x^2
Re-write
1/2 x^2 = 47
x^2 = 47 * 2
x^2 = 94
x = √94
x = 9.7 in
Answer
9.7 in
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40 = 1/2(x)(x)
40 = 1/2 x^2
1/2 x^2 = 40
x^2 = 40 * 2
x^2 = 80
x = √80
x = 8.9 in
8.9 in
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