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keliling persegi - keliling lingkaran
Keliiling persegi = 4s
= 4×40 = 160 cm
Keliling lingkaran =
= × 28
= 44 cm²
Jadi, keliling nya = 160 - 44 = 116 cm
no. 3
= 2(p+l) +
= 2(14+14) +
= 56 + 22
= 78 cm²
segitu aja ya, yg lain kebanyakan