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2014-05-29T13:41:27+07:00
Ae = akar 17 kuadrat - 15 kuadrat
= 8 cm
keliling = 14 + 17 + 17 + 30
= 78 cm

luas = a+b/2 .t
= 14 +30 /2 .15
= 330 cm2
2014-05-29T15:17:00+07:00
17²-15²
289-225
64


AE = √64
     = 8

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