1. The sum of squares of length and breadth of a rectangle is
100 and its area is 48. Find the length and breadth of the
rectangle.
2. Simplify (2x + 3y ) 2 – (2x -3y ) 2
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1. The sum of squares of length and breadth of a rectangle is
100 and its area is 48. Find the length and breadth of the
rectangle.
2. Simplify (2x + 3y ) 2 – (2x -3y ) 2
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Answer:
area=48m^2
(l+b)^2=100
l+b=square root 100
l+b=10
l=10-b
l*b=48
b=48/l
l+b=10
l+48/l=10
taking lcm
l^2+48=10l