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jadi mencari luas adalah
luas persegi + luas 1/4 lingkaran
40x40+1/4 x 3,14 x 40 x 40
1600 + 1256
=……………cm2
kelililing 4s+keliling 1/4 lingkaran
4x40+ 1/4 x 80
160+20
=…………… cm
hitung sendiri ya...
klo suka dilike :)