tolong kerjakan no 2 pake cara makasih

A. 42 cm
B. 14910cm
C. 99800000dm=998000000cm
D. 612000m

a. K= 2(7+6) = 26 cm
L = 7 x 6 = 42 cm²

b. K= 2(71cm+2,1)= 146,2 cm
L= 71 x 2,1 = 149,1 cm²

c. K = 2(1000+9,98dam) = 2019,96 dam
L= 1000 x 9,98 = 9980 dam²

d. K= 2(10200m+60) = 20520 m
L= 10200 x 60 = 612000 m²


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