no dum bicth im having trouble myself
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It means to multiply the radius by itself: radius x radius
The diameter is twice the radius. So multiply the radius by 2
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
What you would do is just multiply the radius by 2 because radius is 1/2 of the diameter.Example:A circle has a radius of 8 cm. What is the diameter?Just multiply 8 times 2 = 16The diameter of the circle is 16 cm.
The radius is 1/2 of the diameter, so if the radius is 20 units then the diameter is 40 units. You multiply the radius by 2 to get the diameter.