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p = 2xl
L = 98 cm²
MAKA :
L = p x l
98 = 2l x l
98 = 2l²
l² = 98/2
l = √49
l = 7 cm
jadi pnjang = 2 x 7 = 14 cm
K = 2 x (p+l)
= 2x (14+7)
= 2 x 21
= 42 cm
p = 2l
L = p x l
98 = 2l x l
98 = 2l²
l² = 49
l = 7 cm
p = 2l = 14 cm
keliling = 2 (p + l) = 2 (14 + 7) = 2 x 21 = 42 cm