Circumference and Area Word Problems

Front

What is the formula for calculating the circumference of a circle?

Back

Circumference = 2 × π × radius or Circumference = π × diameter.

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi) approximately?

Back

π is approximately 3.14.

Tags

CCSS.HSG.GMD.A.1

Front

If the radius of a circle is 5 meters, what is its circumference?

Back

Circumference = 2 × π × 5 = 31.40 meters.

Tags

CCSS.7.G.B.4

Front

What is the formula for calculating the area of a circle?

Back

Area = π × radius².

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 3 meters, what is its area?

Back

Area = π × 3² = 28.26 square meters.

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 10 feet, what is its radius?

Back

Radius = diameter ÷ 2 = 5 feet.

Tags

CCSS.7.G.B.4

Front

How do you convert diameter to circumference?

Back

Circumference = π × diameter.

Tags

CCSS.7.G.B.4

Front

If a circular rug has a diameter of 8 feet, what is its circumference?

Back

Circumference = π × 8 = 25.12 feet.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a diameter of 12 inches?

Back

Area = π × (6)² = 113.10 square inches.

Tags

CCSS.7.G.B.4