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Sagot :
Answer
30
steps
area of trapizium is a+b/2 * h.
we have a=14, h=15, area=330 and we need to find b
so, 14+b/2 * 15=330
we divide 15 on both sides so 14+b/2=22
we multiply 2 on both sides so 14+b=44
b=44-14
b=30
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