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62 = 2(p+12)
62 = 2p + 24
2p = 62 - 24
2p = 38
p = 19 cm
b. L = p x l
L = 19 x 12
L = 228 cm2
semoga membantuya^^
K = 62 cm
l = 12 cm
Ditanya :
a. Panjang persegi panjang
b. Luas persegi panjang
Jawab :
a. K = 2 × (p + l)
62 = 2 (p + 12)
62 = 2p + 24
2p = 62 - 24
2p = 38
p = 38/2
p = 19 cm
b. L = p × l
L = 19 × 12
L = 228 cm²