tolong dong no 10-13 sama caranya nya yaa..
Matematika
nurmaan
Pertanyaan
tolong dong no 10-13 sama caranya nya yaa..
1 Jawaban
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1. Jawaban zafiakrt21
10. LJ = 120°/360° × π × r × r
= 1/3 × 22/7 × 7 × 7
= 1/3 × 22 × 7
= 1/3 × 154
= 51,3 cm² [B]
11. 75°/ 120 = 50° / OPQ
×
75 OPQ = 50° × 120
75 OPQ = 6000
OPQ = 6000 / 75
OPQ = 80 cm² [A]
12. Lt = Luas Juring - Luas Segitiga
= (90°/360° × π × r × r) - (10 × 10 / 2)
= (1/4 × 3,14×10×10) - (50)
= 78,5 - 50
= 28,5 cm² [D]
13. PQ² = PO² - QO²
PQ² = 26² - 10²
PQ² = 676 - 100
PQ² = 576
PQ = √576
PQ = 24 cm [D]