ShonhajimaulanaJawaban : Keliling 1/2 lingkaran : 1/2 x π x D 1/2 x (22/7 x 28) 1/2 x 88 = 44 cm
Keliling Trapesium : AB + BC + CD + DA (40 + 32) + (28 + 32) 72 + 60 = 132 cm ===================== Jumlah gabungan bangun datar : 44 cm + 132 cm = 176 cm
=88×1/2
=44
ab+bc+cd+da
=40+32+28+32
=132
=44+132=176
Keliling 1/2 lingkaran :
1/2 x π x D
1/2 x (22/7 x 28)
1/2 x 88 = 44 cm
Keliling Trapesium :
AB + BC + CD + DA
(40 + 32) + (28 + 32)
72 + 60 = 132 cm
=====================
Jumlah gabungan bangun datar :
44 cm + 132 cm = 176 cm