What is the area of a circle with a radius of 5?

The area is $$A = \text{π}r^2 = \text{π} \times 5^2 = 25\text{π} \text{ or approximately } 78.54$$ .

What is the formula for the area of a circle?

The formula for the area of a circle is $$A = \text{π}r^2$$ .

What does π (pi) represent in circle geometry?

π (pi) is a constant approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.

What is the measurement around the circle called?

The measurement around the circle is called the circumference.

What is a chord in a circle?

A chord is a line segment whose endpoints lie on the circle.

What is a tangent in relation to a circle?

A tangent is a line that touches the circle at exactly one point.

What is the center of a circle?

The center of a circle is the point that is equidistant from all points on the circle.

Circles - Circumference, Radius, Diameter Flashcards

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the radius of a circle?

Back

The radius of a circle is the measurement from the center of the circle to any point on its edge.

2.

FLASHCARD QUESTION

Front

What is the diameter of a circle?

Back

The diameter of a circle is the measurement from one edge of the circle to the opposite edge, passing through the center.

Tags

CCSS.HSG.C.A.2

3.

FLASHCARD QUESTION

Front

What is the relationship between radius and diameter?

Back

Tags

CCSS.7.G.B.4

4.

FLASHCARD QUESTION

Front

What is the formula for the circumference of a circle?

Back

Tags

CCSS.7.G.B.4

5.

FLASHCARD QUESTION

Front

If the diameter of a circle is 27, what is the radius?

Back

The radius is 13.5.

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

If the radius of a circle is 18, what is the diameter?

Back

The diameter is 36.

Tags

CCSS.7.G.B.4

7.

FLASHCARD QUESTION

Front

What is the circumference of a circle with a diameter of 16?

Back

Tags

CCSS.7.G.B.4

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