Understanding the Circle and Pi

What is the value of π when the circumference of a circle is 31.4 units and the diameter is 10 units?

• 2.14

• 3.14

• 4.14

• 5.14

Tags

TEKS.MATH.7.5B

Which of the following represents the relationship between the circumference (C) and diameter (d) of a circle?

Tags

TEKS.MATH.7.5B

A circle has a circumference of 62.8 cm. What is the diameter of the circle if π is approximately 3.14?

• 10 cm

• 15 cm

• 20 cm

• 25 cm

Tags

TEKS.MATH.7.5B

If the circumference of a circle is 50.24 units, what is the diameter of the circle using π ≈ 3.14?

• 12 units

• 14 units

• 16 units

• 18 units

Tags

TEKS.MATH.7.5B

Which of the following is the correct formula for calculating the diameter of a circle if the circumference is known?

Tags

TEKS.MATH.7.5B

If the circumference of a circle is 94.2 units, what is the diameter of the circle using π ≈ 3.14?

• 25 units

• 30 units

• 35 units

• 40 units

Tags

TEKS.MATH.7.5B

If a circle has a circumference of 75.36 units, what is the diameter of the circle using π ≈ 3.14?

• 20 units

• 22 units

• 24 units

• 26 units

Tags

TEKS.MATH.7.5B

Which of the following is the correct relationship between the circumference and diameter of a circle?

• The circumference is half the diameter.

• The circumference is twice the diameter.

• The circumference is three times the diameter.

• The circumference is π times the diameter.

Tags

TEKS.MATH.7.5B

If the circumference of a circle is 125.6 units, what is the diameter of the circle using π ≈ 3.14?

• 30 units

• 35 units

• 40 units

• 45 units

Tags

TEKS.MATH.7.5B

Which of the following best describes π in relation to a circle?

• The ratio of the area to the radius.

• The ratio of the circumference to the diameter.

• The ratio of the diameter to the radius.

• The ratio of the radius to the circumference.

Tags

TEKS.MATH.7.5B