Diketahui trapesium sama kaki ABCD dengan AD = BC,AB = 15 cm,dan sudut BAD = 45 derajat.
hitunglah:a.besar sudut ADC
b.tinggi trapesium
c.luas trapesium!

2
kasih gambarnya dong,biar lebih ngeresep
nggak ad gambar nya

Jawabanmu

2014-04-09T17:14:10+07:00
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2014-04-09T18:20:01+07:00
Bad=abc=45......adc=bcd
bad+abc=90.......adc+bcd=360-90=270
adc=270/2=135
b)tan 45=depan/samping=1/1
 t=........1/1=t/5
t=5
c)L=1/2*(15+5)*5=50