Question

Q2. If the length of a door is 7 m and its
breadth is 4 m. Find the length of the wooden
frame needed to put in 3 such doors?​

Answer 1

Answer:

66 m of the wooden frame will be needed to put in 3 such doors.

Step-by-step explanation:

The length and breadth of a door is given to be 7 m and 4 m respectively

We have to find the length of the wooden frame needed to put on 3 such doors

The length of wooden frame needed for 1 door will be equal to the perimeter of the door

perimeter = 2 ( length + breadth )

                 = 2 ( 7 + 4 )

                 = 2 × 11

                = 22 m

So, wooden frame needed for 3 doors = 22 × 3

                                                                = 66 m

Answer 2

Question :-

• If the Lenght of door is 7 meter and its Breadth is 4 meter . Find the Lenght of the wooden frame needed to put in 3 such doors .

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Answer :-

• Lenght of wooden frame needed for 3 doors is 66 meter .

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Explanation :-

• Here, Lenght of door is given 7 meter . Breadth of door is 4 meter . And, we have to calculate the Lenght of the wooden frame needed to put in 3 such doors .

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● First, we will calculate the Perimeter :-

$\Longrightarrow \: \sf { Perimeter \: _{Rectangle} = 2 \times (Lenght + Breadth)}$

$\Longrightarrow \: \sf{Perimeter \: _{Rectangle} = 2 \times (7 + 4)}$

$\Longrightarrow \: \sf{Perimeter \: _{Rectangle} = 2 \times 11}$

$\Longrightarrow \: \sf{Perimeter \: _{Rectangle} = 22 \: meter}$

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● Now, we will find the Lenght of wooden frame for 3 doors :-

$\Longrightarrow \: \: \sf{ Lenght \: = \: 22 \times 3}$

$\Longrightarrow \: \: \sf{Lenght \: = \: 66 \: meter}$

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Hence :-

• Lenght of wooden frame for 3 doors = 66 m .

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