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= 2 . ⁴√3⁴ x 20 /16
= 2 x 3 x 20 /16
= 120/16
= 7 1/2
Jadi jawabn yang benar adalah B. 7 1/2
= 2 x 3 x 1/16 x 20
= 120/16
= 7 1/2
Semoga membantu ya, jadikan terbaik!