Oviya
65 = 2x-5+2x-5+x 65=5x-10 75=5x 75/5=x 15 cm = x
panjang BC=2x-5 =2.15-5 =30-5 = 25 cm
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marsel
K = 3s 65 cm = x + 2x - 5 + 2x -5 65 cm = 5x - 10 65 cm + 10 cm = 5x 75 cm = 5x x = 75 cm : 5 x = 15 cm BC = 2x - 5 cm = 2.15 cm - 5 cm = 30 cm - 5 cm = 25 cm (B)
65=5x-10
75=5x
75/5=x
15 cm = x
panjang BC=2x-5
=2.15-5
=30-5 = 25 cm
65 cm = x + 2x - 5 + 2x -5
65 cm = 5x - 10
65 cm + 10 cm = 5x
75 cm = 5x
x = 75 cm : 5
x = 15 cm
BC = 2x - 5 cm
= 2.15 cm - 5 cm
= 30 cm - 5 cm = 25 cm (B)