If the length and width of a rectangule garden plot were each increased by 20% , what would be the percent increase in the area of plot ?

20%

24%

36%

40%

44%


Description (বিবরণ) :

প্রশ্ন: If the length and width of a rectangule garden plot were each increased by 20% , what would be the percent increase in the area of plot ?

ব্যাখ্যা:

Let, Length of rectangle garden x and width of rectangle garden y.

area = xy

New length = x + 20/100x = 1.2x

New width = y + 20/100 y = 1.2y

New area = 1.2x × 1.2y = 1.44xy

% increase in area = 1.44xy - xy /xy ×100% = 44%


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