Question

Please help!

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Answer 1

1.

`1. \: parallelogram - \: \: a = \: b * h \\ 2. \: triangles - \: \: a = (1)/(2) b * h \\ 3. \: trapazoid - \: \: (1)/(2) (base1 + base2) * h \\ 4. \: circles - \: \: \pi {r}^(2)`
2. is the last option.
3. is d
4. is a