Question

The lenght and breadth of a rectangular field is 5:3. The area of field is 2160metersq. If a fence is to be made at the rate of ₹350per meter , how much it will cost

Answer 1

Answer:

Step-by-step explanation:

Let the ratio be x

then , length =5x

and, breath=3x

Area of rectangle= l×b

=2160

=>5x×3x=2160

=>15x=2160

=>x=144

then, length=5x=5(144)=720m

Breath=3x=3(144)=432m

Wire used for fencing=perimeter of rectangle=2(720+432)

=>2×1150

=>2300m

Answer 2

5X×3X=2160
15X^2=2160
x=2160\15^1\2
=12
5X=60
3X=36
PERIMETER =2(60×36)
=2(2160)
=4320