jika ad = 20cm BD = 30cm, luas bangun datar abcd =....cm²
Matematika
eline21
Pertanyaan
jika ad = 20cm BD = 30cm, luas bangun datar abcd =....cm²
1 Jawaban
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1. Jawaban andhikahanif
mencari panjang AB
= √30² - 20²
= √900 - 400
= √500
= 10√5 cm
luas bangun datar ABCD
= AB x AD
= 10√5 x 20
= 200√5 cm²