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p=(5x -1)
l=(2x+2)
keliling=72
keliling = 2(p+l)
72 = 2(5x-1+2x+2)
72/2= 7x+1
36=7x+1
36-1=7x
35=7x
x=5
maka..
p= 5x-1
p=5(5)-1
p=25-1
p=24
dan
l=2x+2
l=2(5)+2
l=10+2
l=12
maka jawabannya D. 24 dan 12
semoga membantu