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= 8
sementara
AB = 15 + 6
= 21
Luas = D1 xD2 : 2
= 21 x 16 : 2
= 21 x 8
= 168 cm²
nyari CO=√10²-8²=√100-64=√36=6
jadi diagonal 1
=6+15=21
diagonal 2
=16