Answer:
4: A=½bh
A=½(18)(14)
A=½(252
A=125m²
126÷3= 42
42 chickens
5: A=½h(a+b)
A=½(3)(4+3)
A=½(3)(7)
A=½(21)
A=10.5m²
4. 84 chickens
5. 36
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