tlong d bantu y no 2,6,8,9,10 Bukan yng d lingkarin

2)
K = Πd
110 = 22/7 × d
d = 7/22 × 110
d = 7 × 5
d = 35 cm
r = ½ × d = ½ × 35 = 17,5 cm

6)
L = Πr²
3850 = 22/7 × r²
r² = 7/22 × 3850
r² = 7 × 175
r² = 1225
r = √1225
r = 35 cm
d = 2 × r = 2 × 35 = 70 cm

9)
L = Πr²
1133,54 = 3,14r²
r² = 1133,54/3,14
r² = 113354/314
r² = 361
r = √361
r = 19 cm
d = 2 × r = 2 × 19 = 38 cm

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