Question

the length and breadth of a rectangular field are in ratio 4:3. Its area is 6.912 metre square. Find the cost of fencing the field at rupees 2.50 per metre .​

Answer 1

Answer:

let its length be 4x

... breadth be 3x

...area =l*b

or, 4x * 3x

= 12x

or, 12x = 6.912 m sq.

or, x= 6.912/12

or, x=... find it...let it be 'S'

length= 4*S = ..... let it be "b"

breadth= 3*S=.... let it be "a"

therefore,

6.912m. sq. * 2.50= rupees ......