Question

Diketahui : AB = 10 cm,EB = 7cm. Luas daerah jajargenjang = 40 cm², Keliling ABCD adalah... tolong dijawab dengan cara ya,makasih..

Answer 1

L = p x t
40 = 10 x t
t = 40/10 = 4cm

AD = √AE²+DE²
AD = √3²+4²
AD = √25 = 5cm

K = 2 (p + l)
K = 2 (AB + AD)
K = 2 (10 + 5)
K = 30 cm


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