Area of a circle

Front

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

Back

A = π·r²

Tags

CCSS.7.G.B.4

Front

What does 'r' represent in the formula A = π·r²?

Back

radius

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle?

Back

The distance around a circle.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 7 cm, what is the radius?

Back

3.5 cm

Tags

CCSS.7.G.B.4

Front

Calculate the area of a circle with a radius of 4 cm (use π ≈ 3.14).

Back

50.24 cm²

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle if the radius is 5 cm?

Back

10 cm

Tags

CCSS.7.G.B.4

Front

If the area of a circle is 78.5 cm², what is the radius? (Use π ≈ 3.14)

Back

5 cm

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius.

Tags

CCSS.7.G.B.4

Front

How do you convert diameter to radius?

Back

Divide the diameter by 2.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a diameter of 10 cm? (Use π ≈ 3.14)

Back

78.5 cm²

Tags

CCSS.7.G.B.4