Question

*Length of a rectangle is 5cm and breadth is 3 cm then find the ratio of its perimeter to it's area.*
1️⃣ 8:15
2️⃣ 16:15
3️⃣ 15:16
4️⃣ 15:8​

plz answer it

Answer 1

Area of rectangle=lenghth*breadth
=5*3
=15

Perimeter of rectangle=2*(length+breadth)
=2*(5+3)
=16


So the ratio will be 16:15.

Thankyou and best of luck

Answer 2

Given

• Length of the rectangle = 5 cm
• Breadth of the rectangle = 3 cm

To find

• Ratio of its perimeter to its area

Solution

Using formula,

Perimeter of the rectangle = 2(l + b)

where,

l = length of the rectangle

b = breadth of the rectangle

Substituting the given values,

⟶ 2(5 + 3)

⟶ 2(8)

⟶ 16 cm

❖ Perimeter of the rectangle = 16 cm

Using formula,

Area of the rectangle = l × b

Substituting the given values,

⟶ 5 × 3

⟶ 15 cm²

❖ Area of the rectangle = 15 cm²

Ratio of its perimeter to its area :-

Ratio = Perimeter of the rectangle/Area of the rectangle

⟶ 16 : 15

❖ Ratio of its perimeter to its area = 16 : 15

____________________________

Some related formula :-

Perimeter of reactangle = 2(l + b)

Diagonal of rectangle = √l² + √b²

Area of square = side × side

Perimeter of square = 4 × side

Diagonal of square = √2a