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(Keliling Lingkaran) + 2 x p
=(3,14 x 10 x 2) + 2 x 15
= 62,8 + 30
= 92,8 cm
=(2x35)+(2x20)
=70+40=110cm2
kel. lngkrn=2x3.14xr
2x3.14x10
62.8