Question

jawab dengan caranya ​

Answer 1

Penjelasan dengan langkah-langkah:

4. keliling lingkaran

=(360/60)×44 = 264

a. r = K/2π =264/(2×22/7)

= 264/(44/7)

= (264×7)/44

= 42

b. Luas lingkaran = πr²

= 22/7 × 42 × 42

= 22×6×42 = 5545 cm²

c. Luas juring POQ = (60/360) × 5545

= 1/6 x 5545 = 924 cm²

5. luas lingkaran = 22/7×14×14

= 22×2×14

= 44×14 = 616 cm²

Luas juring = (60/360) × 616

= 1/6 × 616 = 102 2/3 cm²

Luas segitiga = ½×r²×sin 60

= ½×196× ½√3

= 49√3 cm²

Luas tembereng

= luas juring - luas ∆

= 102 2/3 - 49√3

= 102,67 - 84,87

= 17,8 cm²