Circle Geometry Review

Question 1

What is the Area of this decal? It has a radius of 15 cm.

Accepted Answer

706.50 cm2

Question 2

What is the Area of this circle? Diameter = 22 cm.

Accepted Answer

379.94 cm2

Question 3

What part of the circle is the red part?

Accepted Answer

Area

Question 4

Which of the following is the formula for Area?

Accepted Answer

A=πr2

Question 5

What part of the circle is the red part?

Accepted Answer

Circumference

Question 6

What part of the circle is the red part?

Accepted Answer

Origin

Question 7

Rearrange this formula to solve for Pi

Accepted Answer

π=C/2r

Question 8

What does it mean to square (x2) a number?

Accepted Answer

Multiply the number by itself

Question 9

What part of the circle is the red part?

Accepted Answer

Diameter

Question 10

What part of the circle is the red part?

Accepted Answer

Radius

Question 11

Which of the following is the formula for Circumference?

Accepted Answer

C=2πr, C=πd

Question 12

What is the circumference of this decal? It has a radius of 15 cm.

Accepted Answer

94.20 cm

Questions 12