Expansion

If one side of a rectangle is multiplied by 2 and the other side by 4, by what percentage does the area increase?

Final Answer:

p =  700 %

Step-by-step explanation:

S1=a b S2 = (2 a)   (4 b) = 2 4   ab = 8 S1  r =  S1S2S1 =  S18 S1  S1 r=81=7 p=100 r=100 7=700%



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planimetricsbasic operations and conceptsnumbersUnits of physical quantitiesGrade of the word problem

 
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