Question

The area of a rectangular piece of cardboard is 36sq cm and its length is 9 cm . What
is the width of the cardboard?​

Answer 1

Answer:

= area of rectangle =l×b

36 = 9× b

= 36/9 =B

4cm = Breadth

it'll surely help you

Answer 2

Answer :-

• The width of the cardboard is 4 cm.

Given :-

• The area of a rectangular piece of cardboard is 36 cm².
• It's length is 9 cm.

To find :-

• The width of the cardboard.

Step-by-step explanation :-

• In this question, it has been given that the area of a rectangular piece of cardboard is 36 cm² and it's length is 9 cm. We have to find the width of the cardboard.

• The piece of cardboard is rectangular, which means that it's in the shape of a rectangle. So, to find it's width, we will use the formula required for finding the area of a rectangular, make an equation using it and then solve it to find out our answer.

Calculations :-

We know that :-

$\underline{\boxed{\sf Area \: of \: a \: rectangle = Length \times Breadth.}}$

Here,

• Area = 36 cm².
• Length = 9 cm.

Let the width be x.

Now,

Substituting these values in the given formula,

$\bf36 = 9 \times x$

Multiplying 9 by x,

$\bf36 = 9x$

Transposing 9 from RHS to LHS, changing it's sign,

$\bf\dfrac{36}{9} = x$

Dividing 36 by 9,

$\overline{\boxed{\bf4 = x.}}$

• The value of x is 4.

-----------------------------------------------------------

• Hence, the width is 4 cm.