Understanding Circles: Area and Circumference

What is the term used to describe the distance from the center of a circle to its edge?

• Perimeter

• Radius

• Diameter

• Circumference

Tags

CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

CCSS.HSG.GPE.A.1

If the diameter of a circle is 8 cm, what is its circumference?

• 16.00 cm

• 50.24 cm

• 12.56 cm

• 25.12 cm

Tags

CCSS.HSG.GMD.A.1

How do you calculate the circumference of a circle using its radius?

• Diameter divided by 2

• Radius squared times Pi

• 2 times Pi times radius

• Pi times diameter

Tags

CCSS.HSG.GMD.A.1

What is the circumference of a circle with a radius of 3 meters?

• 20.9 meters

• 6.28 meters

• 18.84 meters

• 9.42 meters

Tags

CCSS.HSG.GMD.A.1

In a composite shape with a rectangle and two semicircles, how do you calculate the total perimeter?

• Calculate the circumference of the full circle and add the length of the rectangle

• Multiply the radius by Pi and add the length of the rectangle

• Double the radius and add the length of the rectangle

• Add the perimeters of the rectangle and semicircles

Tags

CCSS.7.G.B.4

What is the formula to calculate the area of a circle?

• Pi times diameter squared

• Radius times diameter times Pi

• Pi times radius squared

• 2 times Pi times radius

Tags

CCSS.HSG.GMD.A.1

If the radius of a circle is 7 cm, what is its area?

• 153.94 cm squared

• 154.12 cm squared

• 153.16 cm squared

• 150.80 cm squared

Tags

CCSS.HSG.GMD.A.1

How do you find the area of a composite shape consisting of a rectangle and two semicircles?

• Calculate the area of the rectangle only

• Double the area of a semicircle and add to the rectangle's area

• Calculate the area of the rectangle and add the area of a full circle

• Calculate the area of the rectangle and subtract the area of the semicircles

Tags

CCSS.HSG.GMD.A.1

What is the area of a circle with a diameter of 8 meters?

• 75.36 meters squared

• 25.12 meters squared

• 100.48 meters squared

• 50.24 meters squared

Tags

CCSS.HSG.GMD.A.1

For a composite shape with a 12m rectangle and a circle of radius 3m, what is the total area?

• 104.26 meters squared

• 100.26 meters squared

• 98.26 meters squared

• 102.26 meters squared

Tags

CCSS.HSG.GMD.A.1