Math

Circles

100

What is circumference

The distance around a circle

200

Diamiter=9in

C=

C=

C=

C=9pi

C=28.2743in

C=28.27in

300

What is radius

what is diameter

Radius: half the diameter

diameter: double the radius

Questions

100

What is a proportional relationship

quantities that decrease and increase at the same rate

200

what is a scale drawing

increases or decreases size at same rate exact accurate

300

why does multiply by 3.14 work for any size circle big or small

Same scale factor

simplifying fractions

100

18/27

56/8

2/3

7

200

40/44

8/72

11

9

300

40/55

6/82

1.375

13.66