Circles

Question 1

How do you find the circumference of a circle?

Answer 1

C = Pi divided by diameter

Question 2

How do you find the radius?

Answer 2

R = d divided by 2

Question 3

How do you find the diameter of a circle?

Answer 3

D= Rx2

Question 4

What is the centre of the circle?

Answer 4

The centre.

Question 5

How is one way to make a circle?

Answer 5

A string and pin

A compass

Question 6

What is the circumference of a circle?

Answer 6

The circle all the way around.

Question 7

What is Pi?

Answer 7

A ration of circumference to get the area of a circle.

Question 8

What is radii?

Answer 8

Half way across a circle, plural.

Question 9

James said 18 people in his class rode their bike to school today while 10 people took the bus and 14 people got driven to school. There are 32 people in his class. How can he create a circle graph to display this data?

Answer 9

First, find the total percent of how each person got to school, then make it a decimal. Divide the decimal number by 360 to get a number that would be the central angle, and apply this data to a circle graph.

Question 10

How do you get the percent of a fraction?

Answer 10

Divide the numberator by the denomenator and multiply it by 100.

Question 11

How do you fin the area of a circle?

Answer 11

A= Pi (r) (r)