Unit 3.1.1 Area & Circumference

The radius is....

• a line that crosses through the center and touches each edge 
• the center point of a circle 
• a line from the center point to the edge of the circle
• an element in science

Which segment is not a radius?

• CA
• CB
• CD
• LM

Find the area of the circle.  Use 3.14 for π. Round to the nearest tenth if necessary.
a circle with radius 48 mm

• 7,234.56 mm²
• 2,216.46 mm²
• 7,934.59 mm²
• 7,314.22 mm²

Tags

CCSS.7.G.B.4

A line that goes from one end of the circle to the other and crosses the center point.  

• center
• diameter
• dime eater
• radius

Tags

CCSS.HSG.C.A.2

_{Find the Circumference.}

• 31.4 in
• 78.5 in sq
• 15.7 in
• 3.14 in 

Tags

CCSS.7.G.B.4

Find the area of a circle with a radius of 9.

• 2.83 x pi
• 81 x pi
• 25 x pi
• 28.3  x pi

Tags

CCSS.7.G.B.4

find the area of the circle below.

• 100 cm
• 225 cm
• 9 cm
• 28.26 cm

Tags

CCSS.7.G.B.4

What is the diameter?

• 8
• 16
• 10
• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18
• 72
• 38
• 14

Tags

CCSS.7.G.B.4

what is the area of this semicircle ?

• 25.13cm
• 50.27cm
• 200.96cm
• none of the above

Tags

CCSS.7.G.B.4