Question

The length and width of the rectangle are 12 cm and 9 cm. Find its area and perimeter.​

Answer 1

Answer:

Given:-

The length and width of the rectangle are 12 cm and 9 cm. Find its area and perimeter

To Find:

Area and perimeter.

Note:-

●》Area of the rectangle = Length × Breadth.

●》Perimeter of the rectangle = 2 × ( Length + Breadth ).

●》When units are multiplied then they will become unit square. For example- cm × cm = cm².

Solution:-

[ First Area ], Length = 12 cm ; Breadth = 9 cm

☆ According to note first point~

▪︎$Area \ \ of \ \ the \ \ rectangle = Length × Breadth$

▪︎$Area \ \ of \ \ the \ \ rectangle = 12 cm × 9 cm$

☆ After doing calculations and accordingly to note third point~

▪︎$Area \ \ of \ \ the \ \ rectangle = 108 cm²$

Area = 108 cm²

_____________________________

[ Now perimeter ], Length = 12 cm ; Breadth = 9 cm

☆ According to note second point~

▪︎$Perimeter \ \ of \ \ the \ \ rectangle = 2 × ( Length + Breadth )$

▪︎$Perimeter \ \ of \ \ the \ \ rectangle = 2 × ( 12 cm + 9 cm )$

▪︎$Perimeter \ \ of \ \ the \ \ rectangle = 2 × 21 cm$

☆ After doing calculations~

▪︎$Perimeter \ \ of \ \ the \ \ rectangle = 42 cm$

Perimeter = 42 cm

Answer:-

Hence, the area of the rectangle = 108 cm² : Perimeter of the rectangle = 42 cm.

:)

Answer 2

Answer:

The length and width of the rectangle are 12 cm and 9 cm. Find its area and perimeter.

✧GiveN✧:-

In the given rectangle,

Length = 12 cm

Breadth = 9 cm

✧To FinD✧:-

The area and perimetr of the given rectangle.

✧SolutioN✧:-

The length and width of the rectangle is already known , ie,

Length = 12 cm

Breadth =9 cm

As we know,

The formulae applied here are,

⟿ Area of a rectangle = Length × Breadth

⟿ Perimeter of a rectangle = 2(Length + Breadth)

♡Area!♡

12 * 9= 108

♡Perimeter!♡

2(12+8)

2*21

= 42

Happy Learning!☆