Question

if the perimeter of the rectangle is 450 cm and the sides are in the ratio 4: 5, find the length of the rectangle?

1️⃣ 125 cm
2️⃣ 100 cm
3️⃣ 150 cm
4️⃣ 152 cm

Answer 1

Perimeter= 450 {2(l+b)}
Ratio = 4:5
Let length be 5x and breadth be 4x

•2(l+b) = 450
•2(5x+4x) = 450
•2*9x = 450
•18x = 450
•x = 450/18
•x = 25

So,length = 5x
=5*25
=125cm

Answer 2

Answer:

• 125 cm

Step-by-step explanation:

Given

• Perimeter of the rectangle = 450 cm
• Ratio of sides of the rectangle = 4 : 5

To find

• Length of the rectangle.

Solution

↪ Perimeter of rectangle = 2(Length + Breadth)

↪ Let the length be 5x and breadth be 4x.

• 450 = 2(5x + 4x)
• 450 = 2(9x)
• 450 = 18x
• x = 450/18
• x = 25

Hence, the sides are,

• Length (5x) = 125 cm
• Breadth (4x) = 100 cm