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b. d = 7/22 x 1256 = 400
c d = 7/22 x 2200 = 700
d d = 7/22 x 3140 = 1000
d =
770 : 22/7
770 x 7/22
35 x 7
= 245 cm
b. 1256 cm
d =
1256 : 3,14
400 cm
c. 2200 cm
d =
2200 : 22/7
2200 x 7/22
100 x 7
= 700 cm
d. 3140 cm
d =
3140 : 3,14
1000 cm