4 years ago

What's the answer to this question?

Mathematics

1 answer:

laiz [17]4 years ago

4 0

Area = 1/2 h(b + B)
1/2.10.(b + 12) = 100
5(b + 12) = 100
b + 12 = 100 ÷ 5
b + 12 = 20
b = 20 - 12
b = 8

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