math.

circumference

100

R-3

C= 3.14 * D 

18.84 

200

R-4

C= 3.14 * D

12.56

300

R-15

C= 3.14 * D

47.1

400

R-50

C= 3.14 * D

314

500

R- 30

C= 3.14 * D

94.2

area

100

5x6

30

200

3x3

9

300

15x2

30

400

18x2

36

500

65x3

195

perimeter

100

rectangle- 12, 7 

38

200

rectangle- 2,4

12

300

rectangles-9,21

60

400

triangle- S,5 H,3

7.5

500

square- 7

28

area of circle

100

4*4*3.14

50.24

200

3*3*3.14

28.26

300

5x5x3.14

78.5

400

6x6x3.14

113.04

500

8x8x3.14

200.96