Question

the length and breadth of a rectangle are in the ratio of 3:4.its area is 6912sq.m .Find tje cost of rectangular field at rs 2.50 per metre.

Answer 1

Hii

Here is your Answer

Let the

Length = 3x
Breadth = 4x
Area Of Rectangle = 6912sq/M

Area Of Rectangle = Length * Breadth
6912 = 3x*4x
6912 = 12x²
x² = 6912/12
x² = 576
X = 24

Now. Put the Value of X in Length and Breath

For Length 3x = 3*24 = 72M
For Breadth 4x = 4*24 = 96M

For the Cost of The Rectangular Field
For Per Meter Cost = 2.50Rs

Now, For 6912 Sq/M * 2.50
= 17280Rs
The Total Cost of 6912Sq/Meter is 17280Rs Ans

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Answer 2

Here is your solution

Given :-

The ratio of length and breadth of the given rectangle is 4:3

Let the length and breadth be 4x and 3x .

as area of rectangle = length × breadth

=>6912= 12x^2 =
=> 6912/12=x^2
=> 576=x^2
=>24=x

length = 4x =4×24=96
and breadth = 3x = 3×24=72

perimeter of the rectangle = 2 (l + b)
=> 2× (96+72)
=>336cm

Area of rectangle =l×b
=>96×72=6912m^2

Ratio of breath and rectangle =72/6912=3:288

hope it helps you