contestada

A string is wound symmetrically Around a circular rod The string goes exactly 5 times around the rod The circumference Of the rod is 4cm And its length is 15cm Find the length of the string in cm​

Respuesta :

The length of the string in cm is; 20 cm

Circumference of a circle

We are told that the string is wound symmetrically around a circular rod.

Now, the circumference of the rod is 4 cm and length is 15 cm.

Now, circumference is also the length of a circle. Thus, one wound of the string will be equal to the circumference of the rod.

Thus, one wound = 4 cm

Since the string makes 5 turns about the rod, then;

Length of string = 5 × 4 = 20 cm

Read more about circumference of a circle at; https://brainly.com/question/14283575

Otras preguntas