How to graph a circle
Note the center of the circle.
The center is the point inside the circle that is at an equal distance from all of the points on the line.
Know how to find the radius of a circle.

The radius is the common and constant distance from all points on the line to the center of the circle. In other words, it is any line segment that joins the center of the circle with any point on the curved line.

How to take cytomel
Know what cytomel treats.
Cytomel is the brand name for liothyronine, which is sometimes prescribed by doctors to treat hypothyroidism. Levothyroxine is more commonly prescribed, but some people have to take liothyronine instead.

Hypothyroidism describes a condition in which a person's thyroid gland is unable to create the proper amount of thyroid hormone. In addition : Cytomel can be used to decrease enlarged thyroid glands which are commonly known as goiters.

How to get an ultrasound for pregnancy
Understand the importance of the ultrasound exam.
The ultrasound exam is used to evaluate the fetus' growth and development, and to determine how the pregnancy is progressing. Two ultrasound exams are performed over the course of your pregnancy-one in the first trimester and one in the second.

The first trimester ultrasound is used by health care providers to confirm and date the pregnancy, so you will get a fairly accurate idea of your due date. This ultrasound can also be used to check for the presence of more than one fetus.

How to determine shipping costs
Take packaging into account.
The type of packaging you use affects costs. Light packaging tends to be inexpensive.
Smaller boxes add about a dollar to shipping costs, while light envelopes add about 25 cents. However, using a larger box can cost up to $5.