Question

find the perimeter of 20 CM 40 centimetres​

Answer 1

Answer:

perimeter = 2( l+ B )

= 2( 20+40 )

= 2( 60 )

= 120 CM

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Answer 2

Answer:

Perimeter of square =40 cm

Let the side be x

A.T.Q,

Perimeter of a square = 4 × sides

40 cm = 4x

4x = 40 cm

X = 40 / 4

X = 10 cm

So, area of the square,

Side × side m square = 10 × 10 cm

= 100 cm square

Area of square = Area of rectangle

100 cm square = 100 cm square

In the rectangle,

Length = 20 cm

Breadth = x

Area = 100 cm square

A. T. Q,

Length × breadth = Area

20 × X = 100

20 x = 100

X = 100 / 20

X = 5 cm

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Step-by-step explanation: