Jawab:
p:l = 5:4
p = 5/4l
L = p.l
180 = 5/4l.l
180 = 5/4.l^2
l^2 = 180.4/5
l = √144
l = 12 cm
p = 5/4.12
p = 15 cm
K = 2.(p+l)
K = 2.(15+12)
K = 2.27
K = 54 cm
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Jawab:
p:l = 5:4
p = 5/4l
L = p.l
180 = 5/4l.l
180 = 5/4.l^2
l^2 = 180.4/5
l = √144
l = 12 cm
p = 5/4l
p = 5/4.12
p = 15 cm
K = 2.(p+l)
K = 2.(15+12)
K = 2.27
K = 54 cm