Question

Find the perimeter of a rectangle whose length is 5 cm and diagonal is 12 ​

Answer 1

★ Solution :-

Given ,

• Length = 5cm
• Diagonal = 12cm

We need to find ,

• Perimeter of rectangle = ?

To find , the perimeter of rectangle , firstly we need to find the breadth of rectangle .

As we know that,

Diagonal = √length² + breadth²

Substituting ,

• Diagonal = 12cm
• Length = 5cm

→ 12 = √5² + breadth²

→ 12² = 5² + breath²

→ 144 = 25 + breath²

→ 144 - 25 = Breadth²

→ 119 = Breadth²

→ Breadth = 10.98 ≈ 11 cm

Now , finding perimeter

As w know that,

Perimeter of rectangle = 2 ( l + b)

→ Perimeter = 2(11 + 5)

→ Perimeter = 2(16)

→ Perimeter = 32

Hence , perimeter of rectangle is approximately equal to 32 cm

Answer 2

Answer:

32m

See image above....