hitung keliling bangun di atas

l=14 cm
r= 14/2= 7 cm
p= 25 cm

keliling 1/2 lingkaran
k= 1/2*2*π*r=π*r= 22/7*7= 22 cm

keliling total
Kt= p+p+l+k= 25+25+14+22= 86 cm...