Area of a Circle

Front

What is the formula for the area of a circle?

Back

Area = π × r², where r is the radius of the circle.

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 a circle has a radius of 5 cm, what is its area?

Back

Area = π × (5 cm)² = 78.5 cm².

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

How do you convert diameter to radius?

Back

Radius = Diameter / 2.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a diameter of 10 feet?

Back

Area = π × (5 ft)² = 78.5 ft².

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is doubled, how does the area change?

Back

The area increases by a factor of 4.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 7 inches?

Back

Area = π × (7 in)² ≈ 153.94 in².

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 3 meters?

Back

Area = π × (3 m)² ≈ 28.27 m².

Tags

CCSS.7.G.B.4

Front

If a circular garden has a radius of 2.5 meters, what is its area?

Back

Area = π × (2.5 m)² ≈ 19.63 m².

Tags

CCSS.7.G.B.4