Question

solve this....with correct solution
The length and breadth of a rectangular field is in the ratio 3:4 .it's area is 6912 sq.cm.Find its dimensions

Answer 1

let, length = 4x and breadth = 3x
length * breadth  = 6912;
3x * 4x = 6912
12*x^2 = 6912
x = 24
length = 24*3 = 72
breadth = 24*4 = 96

Answer 2

let length = 3x
breadth = 4x

area of rectangle = l*b
=3x * 2x
=6x²
therefore 6x² = 6912
x²=6912/6
x²=1152
X=√1152
X=33.95
length = 3x= 3(33.95)
=101.85
breadth = 4x = 4(33.95)
135.75
so l=102 (approx.)
b=136 (approx.)




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