How to find the diameter of a circle when given the area

What is the first step suggested when you are stuck with a problem involving the area of a circle?

• Calculate the diameter directly

• Draw a picture of a circle

• Memorize the value of π

• Write down the formula for circumference

What is the relationship between the diameter and the radius of a circle?

• Diameter is the square of the radius

• Diameter is twice the radius

• Diameter is half the radius

• Diameter is equal to the radius

If the area of a circle is given as 132.7 square centimeters, what is the first mathematical operation you should perform to find the radius?

• Divide by π

• Subtract π

• Multiply by π

• Add π

After dividing the area by π, what is the next step to find the radius?

• Multiply by 2

• Subtract the radius

• Add the diameter

• Take the square root

Once the radius is found, how do you calculate the diameter?

• Multiply the radius by 2

• Divide the radius by 2

• Multiply the radius by π

• Add π to the radius