Perimeter/Area of Circles and SemiCircles

Front

A _____ is half of a circle.

Back

semicircle

Front

What is the formula for circumference of a circle given the diameter?

Back

C = 2 π r

Tags

CCSS.7.G.B.4

Front

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

Back

31.42 inches

Tags

CCSS.7.G.B.4

Front

What is the circumference of a bowl with a diameter of 14 cm?

Back

43.98 cm

Tags

CCSS.7.G.B.4

Front

Find the area of a semicircle with a diameter of 18 cm.

Back

127.17 cm²

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

A = π r²

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

Back

14 cm

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi) approximately?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

How do you calculate the circumference of a semicircle?

Back

C = π r + d (where d is the diameter)

Tags

CCSS.7.G.B.4