Question

The area of a rectangle is 123 cm2 and its width is 3
cm. What is its length?
cm​

Answer 1

Answer:

The length is 41 cm

Step-by-step explanation:

Solution:

Area = 123 cm²

Width = 3 cm

Let the -

• Length be y

★ Area of rectangle =

⇒ Length $\times$ Breadth

⇒ 123 = y × 3

⇒ 123 = 3y

⇒ y = 123/3

⇒ y = 41

Length = 41 cm

★ Verification:

⇒ 41 × 3

⇒ 123 cm²

Therefore, the length is 41 cm.

Answer 2

Given :

• Area of rectangle = 123 cm²
• Width of rectangle = 3 cm

To Find :

• Length of the rectangle

Formula used :

• Area of rectangle = length ×width

Solution :

Let the length be l . Then,

$Area \: of \: rectangle = l \times b \\ \\ 123 = l \times 3 \\ \\ \frac{123}{3} = 41 = l$

Therefore, the length of the rectangle is 41 cm.

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Some extra points to remember :-

• A rectangle has four sides.
• Opposite sides of rectangle are equal and parallel.
• Each angle is 90°.
• Diagonals of rectangle are equal.