nomor 24 cara mudahnya kaya gimana ya kak

keliling layang2 = AD+AB+BC+DC = 54
BC = 17
DC = 17
= 34
54-34= 20
AD = 10
AB = 10
.

OD = √AD²-AO² = √10²-6² = √100-36 =√64 = 8.

OC = √DC²-AO² = √17²-6²= √289-36 √225 = 15

JADI, DIAGONAL PERTAMA NYA = BO+OD = 16
DIAGONAL KEDUA NYA = AO+OC = 21

LUAS NYA = 1/2 X D1 X D2
= 1/2 X 16 X 21 = 168CM².

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