Question

the length and breadth of a rectangle are in the ratio 4:3.if it's perimeter is 280metre find its area​

Answer 1

Answer:

4800m²

Step-by-step explanation:

Perimeter =2(L+B)

Let the common ratio be x

280=2(4x+3x)

280=8x+6x

280=14x

x=20

Therefore Area = 80*60

= 4800m²

Answer 2

Step-by-step explanation:

let ratios are

4x and 3x

then

2(4x +3x)= 280

7x=140

x=140/7

x=20

now

length=4(20)= 80 m

breadth= 3(20)= 60 m

area of rectangle = l×b

=80×60

=4800 m^2 is the area of rectangle