Circumference and area of circles

The radius of a circle is ​ (a)   the diameter.

• half
• twice
• triple

Tags

CCSS.7.G.B.4

Draw a circle with a diameter of 10cm.

Tags

CCSS.7.G.B.4

Fill in and say the following sentence. The diameter of this circle is ________.

I use this formula to find the area of a circle:​ (a)   ​

• Area = l * w

What is the AREA of this circle? Leave in terms of Pi

Mathematical Equivalence

ON

12 inches in this circle represents its

• radius

• diameter

Tags

CCSS.7.G.B.4

What is the length of the diameter of the circle?

Tags

CCSS.7.G.B.4

Find the circumference of the circle whose radius is 4 inches.

• 12.56 in

• 25.12 in

• 50.24 in

Find the circumference of the circle whose diameter is 10 m

• 31.4 m

• 62.8 m

• 15.7 m

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