a) L= 3a+1⅔a+a+1=5⅔a+1
P=a²+½a*(a+1)=a² +½a²+½a=1½a²+½a
b) L=5⅔a+1 = 5⅔ *3 +1= 17 +1=18
P=1½a²+½a = 1½*3²+½*3 = 1½*9+½*3 = 13,5+1,5 =15
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a) L= 3a+1⅔a+a+1=5⅔a+1
P=a²+½a*(a+1)=a² +½a²+½a=1½a²+½a
b) L=5⅔a+1 = 5⅔ *3 +1= 17 +1=18
P=1½a²+½a = 1½*3²+½*3 = 1½*9+½*3 = 13,5+1,5 =15
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M