If the length of a rectangle is increased by 25% and the width is decreased by 20%, then the area of the rectangle
AIncreases by 5%
BDecreases by 5%
CRemains unchanged
DIncreases by 10%
AIncreases by 5%
BDecreases by 5%
CRemains unchanged
DIncreases by 10%
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The diameter of circle is times the base of triangle, and the height of triangle is 14cm.If the area of the triangle is 56cm2, then what is the circumference of the circle?(use