Question

Perimeter of a ractangle is 120 m and its breadth is 42 m. Find uts lenght

Answer 1

Question:

Perimeter of a ractangle is 120 m and its breadth is 42 m. Find its lenght.

Answer:

The length of the rectangle is 18 m.

Given:

Perimeter of the rectangle is = 120 m.

Breadth = 42 m.

To find:

The length of the rectangle.

Explanation:

The perimeter of the rectangle is = 120 m.

The breadth of the rectangle is = 42 m.

We know that,

Perimeter = 2(Lenght+Breadth)

⇒(Perimeter÷2)=(Length+breadth)

⇒(Length+Breadth) =(Perimeter÷2)

⇒ Length = (Perimeter÷2)-Breadth

Hence, by putting values we get,

   Length  = (120÷2) - 42 m

               = (60-42) m

               = 18 m.

∴ The length of the rectangle is 18 m.

Answer 2

$\huge\star{\green{\underline{\mathfrak{Answer :-}}}}$

Given:

• Perimeter = 120 m
• Breadth = 42 m

To Find:

• Height = ?

Formula:

• Perimeter = 2 ( Length + Breadth )

Solution:

Putting the values in the formula,

➜ 120 = 2 ( L + 42 )

➜ 60 = L + 42

➜ L = 60 - 42

➜ Length = 18 m

$\rule{200}2$

More such Formulas:

• Area of rectangle = Length × Breadth
• Perimeter of rectangle = 2 ( Length + Breadth )
• Area of square = side²
• Perimeter of square = 4 × side
• Area of circle = πr²
• Circumference = 2πr

$\rule{200}4$