Each side of a rectangle is increased by 100% . How much the percentage of area will be increased

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Each side of a rectangle is increased by 100% . How much the percentage of area will be increased

300%

x,y sides of rectangle
area=xy
increased by 100% =double length
hence
new area=4xy
increased area=4xy-xy=3xy
percentage of area will be increased
by 300%

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