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maka rumusnya k = 2p+2l
46 = 16 + 2l
30 = 2l
l = 15 m
setelah itu mencari luasnya L = P x L
L = 15 x 16
L = 240
46 = 2 (16 + l )
46 = 32 + 2l
46 -32 =2l
14 = 2l
14/2 = l
7 = l
luas = p x l
= 16 x 7
= 112 cm²
luasnya adalah 112 cm²