Jika AC= 45 cm, BC = 36 cm dan CD= 39 cm, maka panjang AD adalah....
NT :....
selamat menjawab
NT :....
selamat menjawab
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Jika AC= 45 cm, BC = 36 cm dan CD= 39 cm, maka panjang AD adalah....
jawab :
AC² = AD² - BC²
45² = AD² - 36²
(45.45) = AD² - (36.36)
2.025 = AD² - 1.296
3.321 = AD²
AD = √3.321
AD = √81 . 41
= √9² . 41
= 9√41