tentukan keliling lingkaran yang memiliki ukuran: a. r=7cm, b=10cm, c. D=14cm, d. d=22cm e. d=14cm
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Jawaban:
a. 43.96 cm
b. 31.4 cm
c. 43.96 cm
d. 69.08 cm
e. 43.96 cm
PENJELASAN
a. r = 7 cm, Keliling Lingkaran = 2πr = 2 × 3.14 × 7 = 43.96 cm
b. b = 10 cm, Keliling Lingkaran = πd = 3.14 × 10 = 31.4 cm
c. D = 14 cm, Keliling Lingkaran = πD = 3.14 × 14 = 43.96 cm
d. d = 22 cm, Keliling Lingkaran = πd = 3.14 × 22 = 69.08 cm
e. d = 14 cm, Keliling Lingkaran = πd = 3.14 × 14 = 43.96 cm