Question

a wire is in the shape of a rectangle of length 5 cm and breadth 4 cm which is bent to form a circle what will be the circumference of the circle​

Answer 1

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Answer 2

The circumference of the circle would be "18 cm" and the radius of the circle is "2.86 cm".

Step-by-step explanation:

The shape of the wire is rectangle so we can find the perimeter of this rectangle as:

Length of rectangle = 5 cm

Breadth of rectangle = 4 cm

We know that the perimeter of rectangle :

Perimeter of rectangle = 2(Length + Breadth)

Perimeter of rectangle = 2(5 + 4)

Perimeter of rectangle = 18 cm

As the circle is made by same wire so the circumference of the circle would be same as perimeter of rectangle .

The circumference of Circle = 18 cm,

Now we can calculate the radius of circle as :

The circumference of Circle = 18 cm,

$2\pi\times r = 18\\r = \dfrac{18}{2\pi}\\r = 2.86 cm$

Hence the circumference of the circle would be "18 cm" and the radius of the circle is "2.86 cm".