Parts of a Circle ,Area and Circumference of a Circle

Front

_____________ is half of the diameter

Back

radius

Front

_____________ is twice the radius

Back

diameter

Tags

CCSS.HSG.C.A.2

Front

Which is the correct formula for the area of a circle?

Back

A = π r²

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle?

Back

C = 2π r or C = π d

Tags

CCSS.7.G.B.4

Front

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

Back

14 inches

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 14 inches, what is the radius?

Back

7 inches

Tags

CCSS.7.G.B.4

Front

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

Back

A = π (5)² = 78.54 in²

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a radius of 3 inches?

Back

C = 2π (3) = 18.85 in

Tags

CCSS.7.G.B.4

Front

If the area of a circle is 50.27 in², what is the radius?

Back

r = √(50.27/π) ≈ 4 in

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and circumference?

Back

C = π d

Tags

CCSS.7.G.B.4