Question

the perimeter of a rectangle is 216 cm. if its length are in the ratio 4:5, find its dimensions and it's area.​

Answer 1

Answer:

48,60 & 2880

Step-by-step explanation:

let, two sides are 4x, 5x

• 2(4x+5X)=216
• 9x=108
• x=12
• dimensions are 4*12=48 and 5*12 = 60
• Area= 48*60= 2880

Answer 2

Answer:

Let the length be 4x and breadth be 5x

Perimeter=2(l+b)=216 cm

2(9x)=216

18x=216 cm

x=216/18=12 cm

thus length=48 cm breadth=60cm

area of rectangle=l*b=60*12cm square=720 cm square