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Alekssandra [29.7K]

3 years ago

6

Help plz. It’s number 6. Thanks

1 answer:

julsineya [31]3 years ago

7 0

A = 1/2 h (a+b)
A / 1/2 h = a + b
A / 1/2 h - b = a

a = A / 1/2 h - b

Hope this helps

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