Question

the sides of a rectangle are in the ratio 4:5 find its sides if the perimeter is 45 CM​

Answer 1

Answer:

4x+5x=45

9x=45

x=45/9

x=5

4x=20

5x=25

Answer 2

Answer:

Step-by-step explanation:

Let the length of the rectangle be 4x and breadth be 5x

So,

Perimeter of rectangle = 2(l+b)

Perimeter=45 (given)

45= 2(l+b)

45= 2(4x+5x)

45= 2(9x)

45= 18x

x= 45/18

x=2.5

Now put the value of x in length and breadth's value

So,

Length=4x

=4*2.5

=10cm

Breadth=5x

=5*2.5

=12.5cm

Hope it help!!