Tolong menjawabnya pake cara... nomor 10 yang a dan b
Muazz
10. a) diket p=18 cm l=14 cm r= 7 cm K persegi panjang= 2(p+l) =2(18+14) =64 cm K 1/2 lingkaran= 1/2×2×π×r =1/2×2×22/7×7 =22 cm Kliling persegi panjang - kelinling 1/2 lingkaran + keliling 1/2 lingkaran 64 - 22 +22 =64 cm jaddi darah yang di asir = 64 cm b) diket p=25 cm l=12 cm r=6 cm K persegi panjang=2(p+l) =2(25+12) =74 cm Kliling 1/4 lingkaran=1/4×2×π×r =1/4×2×3,14×6 =37,68 cm kliling 1/2 lingkaran= 1/2×2×π×r =1/2×2×3,14×6 =18,84 cm
Kliing persegi panjang - 2lkeliling 1/4 lingkaran - kliling 1/2 lingkaran 74-75,36-18,84 =-20,2 cm
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nizaianat
A. Kll.pp = 2 (P + L) = 2(14 + 18) = 2 x 32 = 64cm Kll.1/2lng = =( ) x 14 : 2 = 44/2 = 22cm Kll = 64 + (22-14) - (22-14) = 64 cm b.Kll.pp = 2(25 + 12) = 2 x 37 = 74 cm Kll.lng = π.d= x 12 = 37,71cm Kll = 74 cm - 37,71 cm = 36,29 cm maaf kalo salah
a) diket
p=18 cm
l=14 cm
r= 7 cm
K persegi panjang= 2(p+l)
=2(18+14)
=64 cm
K 1/2 lingkaran= 1/2×2×π×r
=1/2×2×22/7×7
=22 cm
Kliling persegi panjang - kelinling 1/2 lingkaran + keliling 1/2 lingkaran
64 - 22 +22
=64 cm
jaddi darah yang di asir = 64 cm
b) diket
p=25 cm
l=12 cm
r=6 cm
K persegi panjang=2(p+l)
=2(25+12)
=74 cm
Kliling 1/4 lingkaran=1/4×2×π×r
=1/4×2×3,14×6
=37,68 cm
kliling 1/2 lingkaran= 1/2×2×π×r
=1/2×2×3,14×6
=18,84 cm
Kliing persegi panjang - 2lkeliling 1/4 lingkaran - kliling 1/2 lingkaran
74-75,36-18,84
=-20,2 cm
Kll.1/2lng = =( ) x 14 : 2 = 44/2 = 22cm
Kll = 64 + (22-14) - (22-14) = 64 cm
b.Kll.pp = 2(25 + 12) = 2 x 37 = 74 cm
Kll.lng = π.d= x 12 = 37,71cm
Kll = 74 cm - 37,71 cm = 36,29 cm
maaf kalo salah