Question

Tolong dibantu pake cara yg jelas pada gambar diatas luas DEG = 64 cm² dan DG = 8 cm, tentukan panjang DF adalah.......

Answer 1

L DEG = 1/2 × GE × DG
64 = 1/2 × GE × 8
64 = 4 GE
GE = 64/4
GE = 16 cm

DG² = GE × FG
8² = 16 × FG
64 = 16 FG
FG = 64/16
FG = 4 cm

FE = FG + GE = 4 + 16 = 20 cm

DF² = FE × FG
DF² = 20 × 4
DF² = 80
DF = √80
DF = 4√5 cm