diketahui:
AB=ED=13 cm dan AD=5 cm.
tentukan panjang EC!
please bantu Kakak kakak;*
AB=ED=13 cm dan AD=5 cm.
tentukan panjang EC!
please bantu Kakak kakak;*
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Jawaban:
AB = EA = 13 cm
AD = 5 cm
EC = ....?
BD = √AB² - AD²
= √13² - 5²
= √169 - 25
= √144
= 12 cm
BC = CD = ½ x BD = ½ x 12 = 6cm
ED = EA - AD
= 13 - 5
= 8cm
maka:
FC = √BC² + ED²
= √6² + 8²
= √36 + 64
= √ 100
= 10cm