Ada yang tahu kah caranya no 7 sama no 8
Jawaban Terkonfirmasi
7. de = diameter = 30
od = jari2 = ½diameter = 15
ab = 24
ac = ½ab = ½(24) = 12
ob = jari2 = 15
oc² = ob² – ac²
oc² = 15² – 12²
oc² = 225 – 144 = 81
oc = √81 = 9
cd = od – oc = 15 – 9 = 6
8. luas juring oab = 90/360 × 22/7 × 14 × 14
= 154
luas segitiga aob = 14×14/2 = 98
luas diarsir = luas juring – luas segitiga
= 154 – 98
= 56
7. DE=30
AB=24
CD=?
30-24=6