Jawabanmu

2014-05-23T06:59:17+07:00
K = 4 x sisi miring
100 = 4 x sisi miring
sisi miring = 25 cm
tinggi segitiga = √25² - 7² = 24 cm
L = 2 x L segitiga = 2 x 1/2 x 14 x 24 = 336 cm²
1 2 1
2014-05-23T07:07:18+07:00
Keliling = 4 x sisi miring
100 = 4 x sisi miring
sisi miring = 25 cm
tinggi segitiga  pake teorema phytagoras = √25² - √7² = 625 - 49 = √576 = 24 cm
L = Diagonal 1 x Diagonal 2  = (14 x 48) : 2 = 336
                     2
2 1 2