Circles Circumference and Arc Length

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

Tags

CCSS.7.G.B.4

The homeowners association wants to enclose a circular playground in a fence. The need to find the amount of fencing they need to purchase.  Will they need the area or circumference of the playground?

• area

• circumference

• neither

Find the circumference of the circle.

• 113.04

• 1017.36

• 254.34

• 56.55

Tags

CCSS.7.G.B.4

Meg swam from one side of her circular pool to the other side going through the center. If Meg swam 8 feet, what is the approximate circumference of Meg's pool?

• 16 feet

• 25.13 feet

• 251.2 feet

• 4 feet

Tags

CCSS.7.G.B.4

A circle has a circumference of 36π meters. What is the radius of the circle?

• 36 meters

• 6 meters

• 12 meters

• 18 meters

Tags

CCSS.7.G.B.4

What is the green area called?

• sector

• segment

• arc

• section

Danielle wants to make a cookies for 3 friends. The radius of a cookie is 5 inches. If she wants to ice ALL 3 of the cookies, how many square inches of cookies must she cover with icing?

• 47.1 in²

• 235.5 in²

• 78.5 in²

• 15.7 in² 

Tags

CCSS.7.G.B.4

If Circle X is dilated by a scale factor of 3 to form Circle Y, which of the following statements is NOT true?

• The radius of Circle Y is 3 times the radius of Circle X.

• The diameter of Circle Y is 3 times the diameter of Circle X.

• The circumference of Circle Y is 3 times the circumference of Circle X.

• The area of Circle Y is 3 times the area of Circle X.

Tags

CCSS.7.G.A.1

What is the arc length of AB?

Tags

CCSS.HSG.C.B.5

If the circumference of the circle is 52 what is the length of arc AC?

• 26

• 13

• 17

• 104

Tags

CCSS.HSG.C.B.5