7th ACA Test 4-1 Review

Write the ratio that represents the value of π.

π=​ (a)   /​ (b)  

• circumference
• diameter
• radius
• area

Tags

CCSS.HSG.GMD.A.1

The circumference of a circle is C inches. The diameter of the circle is 24 inches. Kyle says you can represent the value of π by dividing 12 by C. Felix says you can represent the value of π by dividing C by 24.

​ (a)   is correct because π is represented by dividing ​ (b)   by​ (c)  

• Felix
• circumference
• 24
• Kyle
• diameter
• radius
• 12
• 3.14

Tags

CCSS.7.G.B.4

The circumference of a circle is C inches. The diameter of the circle is 21 inches. Which expression best represents the value of π?

• C / 21

• 21 / C

• C/3.14

• C/10.5

Tags

CCSS.7.G.B.4

Blake is finding circumference and area of a circle that had a diameter of 4 feet. What is the circumference to the nearest hundredth?

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

Blake is finding circumference and area of a circle that had a diameter of 4 feet. What is the area to the nearest hundredth?

Mathematical Equivalence

OFF

Tags

CCSS.7.G.B.4

Rowan was drawing a picture using circles of 3 different sizes. The diameters of two of the circles are shown. What is the area of the largest circle?

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

The diagram models the length from the center of a gear to the tip of one of its spokes. Find the total area covered by the gear when the gear makes 1 revolution.

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4

A house logo for Cooper's mom's real estate business is in the shape of two triangles and a rectangle as shown. What is the area of the logo in square centimeters?

Mathematical Equivalence

ON

Tags

CCSS.6.G.A.1

A rectangular clock with 2 circular clocks is shown. The the length of the clock is 24 cm long and the width is 12 cm long the radius of the circles is shown. What is the area in square centimeters of the rectangular clock that does not include the area of the circles? Round your number to the nearest hundredth.

Mathematical Equivalence

ON

Mya is creating a circular stained glass piece.

To finish the piece she needs to put copper foil around the edge of the piece.

Mya will need approximately ________ inches of copper foil to finish the edge of the piece.

Mathematical Equivalence

ON

Tags

CCSS.7.G.B.4