Jawabanmu

Jawaban paling cerdas!
2014-06-02T19:04:51+07:00
D² = p² - (r2 - r1)²
21² = p² - (24-4)²
441 = p² - 400
841 = p²
p = 29
1 5 1
2014-06-02T19:22:46+07:00
21 kuadrat           = x kuadrat - (24 - 4)kuadrat
(21 + 20) kuadrat = x kuadrat
441 + 400 = x kuadrat
841 = x kuadrat
akar 841 = x kuadrat
29 = x