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L = 10²
L = 100 cm²
L persegi panjang = p x l
L = 6 x 5
L = 30 cm²
L setengah lingkaran = 1/2 π r²
L = 1/2 x 3.14 x 5²
L = 1/2 x 78.5
L = 39.25 cm²
L total = 100 + 30 + 39.25
= 169.25 cm²
K setengah lingkaran = 1/2 π d
K = 1/2 x 3.14 x 10
K = 1/2 x 31.4
K = 15.7 cm
K total = 10 + 10 + 15.7 + 5 + 6 + 5 + 4
= 55.7 cm
4xs=
4x10= 40
2.keliling persegi panjang
2(panjang x lebar)
2(6x5)
2x30= 60
3.keliling setengah lingkaran
1/2 . π. r
1/2 . 3,14 . 5= 7,85
jumlah 40+60+7,85= 107,85