Jawaban:
4. keliling lingkaran
[tex]k= 2\pi \: r \\ = 2. \frac{22}{7} .42 \\ = \frac{44}{7} .42 \\ = 246m[/tex]
5. luas lingkaran
[tex]l = \pi \: r ^{2} \\ = 3.14 \times 10 ^{2} \\ = 3.14 \times 100 \\ = 314m^{2} [/tex]
maaf kalo salah
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Jawaban:
4. keliling lingkaran
[tex]k= 2\pi \: r \\ = 2. \frac{22}{7} .42 \\ = \frac{44}{7} .42 \\ = 246m[/tex]
5. luas lingkaran
[tex]l = \pi \: r ^{2} \\ = 3.14 \times 10 ^{2} \\ = 3.14 \times 100 \\ = 314m^{2} [/tex]
maaf kalo salah