Universityku

Tolong di jawab pake cara ya!! Jawaban Terkonfirmasi 1.diameter lingkaran besar=42?rb=½. 42=21rk:rb=2:3rk=⅔.21=14L arsir=Lb-Lk=½.22/7.21.21-½.22/7.14.14=693-308=385No. 2K=2.25+2.30+2.38=50+60+76=1863.diameter kolam=14 mr=½. 14=7r pagar=7+3,5=10,5K=2πr=2.22/7.10,5=66 m