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Annette [7]
3 years ago
10

The formula for the area A

Mathematics
1 answer:
chubhunter [2.5K]3 years ago
6 0
A = 1/2h(b1 + b2)
2A = h(b1 + b2)
2A/h = b1 + b2
b1 = 2A/h - b2
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