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6 /RC . 5 / RC . 15/10 = 1
45 / RC² = 1
RC² = 45
RC = √45
RC = √9 .√5
RC = 3√5
6) TW =
35 =
35 = ... kedua ruas pangkatkan 2
1225 = (15 + a)² + 784
(15 + a)² = 1225 - 784
(15 + a)² = 441
15 + a = √441
15 + a = 21 atau 15 + a = - 21
a = 21 - 15 atau a = - 21 - 15
a = 6 atau a = - 36
jawaban :E