Question

With PQ of length 1.6cm as diameter draw a circles

Answer 1

Answer:

The circumference of the circle is approximately 5.0 cm

Step-by-step explanation:

To draw circles, the only thing you need to know is the circumference of a circle. If we are given a diameter of 1.6 cm, we must find information to tell us the circumference.

The circumference of a circle is:

***C =  2πr    or      C =  2 x π x r

The diameter is all the way across the circle, and radius is from any point on the circle to the middle (it is halfway).

Since diameter is 1.6 cm, the radius is  1.6 cm / 2, which is 0.8 cm.

Now the we know the radius, lets plug it into the equation!

C = 2 x π x r

C = 2 x π x 0.8 cm

C = 5.026548...

Since you are making the circle by hand, the most accurate you need it to be is:

C= 5.0 cm

To actually make the circle, I would get a string or something measuring 5 cm, and trace it after you have taped it down.

Let me know if there is some part of the explanation I should do better, or what I did well. Thanks, Tara.

***π is 3.14159...