Circles and Ratios

What is the CIRCUMFERENCE formula for a circle?

• C = πr²

• C = 2πr

• C = πd

• C = πrr

Tags

CCSS.7.G.B.4

A circle is shown. Identify each of the following in the figure:

Three radii of the circle

• Line segment NM

• Line segment MO

• Line segment NP

• Line segment NO

Tags

CCSS.HSG.C.A.2

Consider Circle J.

Calculate the DIAMETER of Circle J if the circumference is 100.48 centimeters.

Use 3.14 for π.

C = πd

Tags

CCSS.7.G.B.4

Brianna ran 6 laps around a circular track with a diameter of 120 feet. She ran a total distance of _____ feet.

Use 3.14 for π. Round answers to the nearest hundredth.

C = πd

Tags

CCSS.7.G.B.4

A circle with radius (r) is inscribed inside a square with a side length (s).

If s = 10 millimeters and r = 5 millimeters, the AREA of the shaded region is _____ square millimeters.

A rectangle is inscribed in a circle.

Calculate the AREA of the circle.

A = πr² OR A = πrr

Diameter = 17 in

A rectangle is inscribed in a circle.

The area of the shaded region is _____.

Round answers to the nearest hundredth.

The cost per slice of a 12-inch pizza that costs $9.75 and is cut into 10 slices is _____.

Round answers to the nearest hundredth.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

A rectangle is inscribed in a circle.

The AREA of the rectangle is _____ square units.

A = bh

Tags

CCSS.8.G.B.8

#3) Type in the circumference. Just the number, no label.

Tags

CCSS.7.G.B.4