Cirlces and Pi

What is the formula for finding area of a circle?

Tags

CCSS.HSG.GMD.A.1

What does it mean to find the area of a circle?

• Measure around the outside of the circle

• Divide the circumference by the diameter

• The amount of space on the inside of a circle

• The distance from the center to the edge of the circle

Tags

CCSS.HSG.GMD.A.1

What is the formula for finding the circumference of a circle?

Tags

CCSS.HSG.GMD.A.1

What does it mean to find the circumference of a circle?

• Measure around the outside of the circle

• Divide the circumference by the diameter

• The amount of space on the inside of a circle

• The distance from the center to the edge of the circle

Tags

CCSS.HSG.GMD.A.1

The seventh grade class is building a mini golf game for the school carnival. The end of the putting green will be a circle.  

If the circle is 12 feet in diameter, how many square feet of grass carpet will they need to buy to cover the circle?

(Enter your answer rounded to two decimal places)

Tags

CCSS.HSG.GMD.A.1

 Find the area of the circle.

• 78.5 cm

• 31.4 cm

Tags

CCSS.HSG.GMD.A.1

A circular swimming pool has a diameter of 23 feet. 

What is the distance around the swimming pool?

• 72.26 ft

• 36.13 ft

Tags

CCSS.HSG.GMD.A.1

Find the circumference of the given circle.

Enter your answer rounded to two decimal places.

Tags

CCSS.HSG.C.B.5

CCSS.HSG.GMD.A.1

What is the radius of a circle if the diameter is 12 meters?

What is the diameter of a circle if the radius is 7 cm?

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1