Tolong bantu soal ada di gambar ya kaka
Nomor 2a:
K = 2p + 2l
88 = 2p + 2(12)
88 = 2p + 24
2p = 88 – 24
2p = 64
p = 64/2
p = 32 cm
Nomor 2b:
K = 2p + 2l
156 = 2(58) + 2l
156 = 116 + 2l
2l = 156 – 116
2l = 40
l = 40/2
l = 20 cm
a.
K= 2x(p+l)
88 cm= 2x(p+12 cm)
p= 88:2-12
p= 44-12
p= 32 cm
b.
K= 2x(p+l)
156 cm = 2x(58 cm+ l)
l= 156:2-58
l= 20 cm