Dik:
AB = 15 cm = s
QR = 16 cm = a
PQ = 17 cm
L total = 270 cm²
Dit:
L arsir ...?
Penye:
t² = PQ²-(½QR²)
t² = 17²-8²
t² = 289-64
t =√225
= 15 cm
L arsir = (L persegi + L ∆) - L total
= ( s² + ½ × a × t) - 270
= ( 15² + ½×16×15) -270
= (225 + 120)- 270
= 345 - 270
= 75 cm²
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Dik:
AB = 15 cm = s
QR = 16 cm = a
PQ = 17 cm
L total = 270 cm²
Dit:
L arsir ...?
Penye:
t² = PQ²-(½QR²)
t² = 17²-8²
t² = 289-64
t =√225
= 15 cm
L arsir = (L persegi + L ∆) - L total
= ( s² + ½ × a × t) - 270
= ( 15² + ½×16×15) -270
= (225 + 120)- 270
= 345 - 270
= 75 cm²
semoga membantu