Penjelasan dengan langkah-langkah:
AB:BC = CD:DA = 4:7
AB = CD = 4x
BC = DA = 7x
L ABCD = P×L = AB×BC
252 = 4x × 7x
252 = 28x²
x² = 9
x = √9 = 3
AB = CD = 4(3) = 12
BC = DA = 7(3) = 21
PQ:CD = 5:4
PQ/CD = 5/4
PQ/12 = 5/4
PQ = (12×5)/4 = 60/4 = 15
K PQRS = 4s = 4PQ = 4×15 = 60cm
semoga membantuuuu
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Penjelasan dengan langkah-langkah:
AB:BC = CD:DA = 4:7
AB = CD = 4x
BC = DA = 7x
L ABCD = P×L = AB×BC
252 = 4x × 7x
252 = 28x²
x² = 9
x = √9 = 3
AB = CD = 4(3) = 12
BC = DA = 7(3) = 21
PQ:CD = 5:4
PQ/CD = 5/4
PQ/12 = 5/4
PQ = (12×5)/4 = 60/4 = 15
K PQRS = 4s = 4PQ = 4×15 = 60cm
semoga membantuuuu