Jawabanmu

2014-05-19T21:13:41+07:00
5.
a. L = t(a+b) * 1/2 = 12(10+15) * 1/2 = 150cm^2
b. L = 15(32+12) *1/2 = 330cm^2

6.
a. L = 12(7+10)*1/2 = 102cm^2
b. L = 16(8+17)*1/2 = 200cm^2


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