Question

The side of a rectangle are in the ratio. 9:4 if its perimeter is 130 cm find its sides

Answer 1

Ratio of the sides=9: 4

Let the sides be 9x and 4x

Perimeter=130cm

Perimeter=2(l+b)

130=2(9x+4x)

130/2=13x

65=13x

x=65/13

x=5

Hope it helps...............

Answer 2

Answer:

20 & 45 cm

Step-by-step explanation:

Ratio of the sides=9: 4

Let the sides be 9x and 4x

Perimeter=130cm

Perimeter=2(l+b)  

130=2(9x+4x)  

130/2=13x

65=13x

x=65/13

x=5

sides are 9x & 4x

9x = 9*5 = 45 cm

4x = 4*5 = 20 cm