Jawaban:
keliling
=2<p+l>
=2(2a+5)+(3a-7)
=2(2a+5+3a-7)
=2(2a+3a+5-7)
=2(5a-2)
=100-4
luas
=p×l
=(2a+5) (3a-7)
=(2a.3a)+(2a-7)+(5.3a+(5.-7)
=6a-14a+15a-35
=6a+a-35
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Jawaban:
keliling
=2<p+l>
=2(2a+5)+(3a-7)
=2(2a+5+3a-7)
=2(2a+3a+5-7)
=2(5a-2)
=100-4
luas
=p×l
=(2a+5) (3a-7)
=(2a.3a)+(2a-7)+(5.3a+(5.-7)
=6a-14a+15a-35
=6a+a-35