Question

the length of a rectangle exceed its breadth by 4cm.if length and breadth are incresed by 3cm the aera of the new reactangle will be 81cm more then that of the given reactngle.then
a)length of the given rectangle is?
b)breath of the given rectangle is?
c)area of new angle is?

Answer 1

now: w and w+4, area = w(w+4)
after growth, we have

(w+3)(w+4+3) = w(w+3)+81
w^2+10w+21 = w^2+3w+81
7w = 60
w = 60/7

Now you can figure all the dimensions.