Question

FIGURES 13. Find the length and the perimeter of rectangle in each of the following cases: Area = 192 cm”, breadth =12cm
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Answer 1

Answer:

The length of the rectangle is 16 cm and the perimeter is 56cm

Step-by-step explanation:

The area of a rectangle is given by,

Area = length x breadth

Given the value,

Area = 192 $cm^2$

Breadth= 12 cm

Substituting these values in the equation we get,

$192=length x 12\\\implies length = \dfrac{192}{12} =16$

So length is 16 cm.

Perimeter of a rectangle is twice the sum of length and breadth. That is

$Perimeter= 2(length+breadth)\\\implies Perimeter =2(16+12)=2\times 28=56$

So perimeter of the rectangle is 56 cm.

Answer 2

CONCEPT :

• first we have to find area of rectangle
• then we have area formula the number we have will divide with it
• we get the the answer then we will find the
• perimeter and we will write the formula
• then we will solve it we get the answer

QUESTION :

• Find the length and the perimeter of rectangle in each of the following cases: Area = 192 cm”, breadth =12cm

GIVEN :

• Area of rectangle = 192 cm

• breadth of rectangle = 12cm

TO FIND :

• what is the length and the perimeter of

• rectangle = ?

SOLUTION :

first we have formula of rectangle :

• area of rectangle = l × b

then, we have

• rectangle area we have = 192 cm

• rectangle breadth we have = 12 cm

then, we will putting the values :

then, we will divide 192 with 12 we get :

• length of rectangle = 192/12

thus, length of rectangle = 16 cm

then, we have to find rectangle

perimeter :

then, we have formula :

• rectangle perimeter = 2 × ( l + b)

• rectangle perimeter = 2 × ( 16 + 2 )

• rectangle perimeter = 2 × 28

rectangle perimeter = 56 centimetres

thus, rectangle perimeter we have = 56 centimetres

ALL IMPORTANT FORMULA :

PERIMETER OF RECTANGLE = 2× ( I + B)

AREA OF RECTANGLE = length ×breadth

PERIMETER OF SQUARE = 4 × side

AREA OF SQUARE = SIDE × SIDE

PERIMETER OF TRAINGLE = A+ B + C

AREA OF TRAINGLE = 1/2 × base ×height