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p= 5+l
2(5+l)+2l=10+2l+2l
=10+4l
62=10+4l , 52=4l , l = 13
p=13+5 = 18
13*18=234 (a)
K = 2(P+L)
62=2(L+5+L)
62=2(2L+5)
62=4L+10
4L=52
L =52/4=13
P = 18
L=13*18= 234 m kudrat