Luas sebuah lingkaran 616 cm² Keliling lingkaran tersebut adalah
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- Jari-jari
[tex] \tt = \sqrt{l \div \pi} [/tex]
[tex] \tt = \sqrt{616 \div \frac{22}{7} } [/tex]
[tex] \tt = \sqrt{616 \times \frac{7}{22} } [/tex]
[tex] \tt = \sqrt{ \frac{4.312}{22} } [/tex]
= √196
= 14 cm
- Keliling
= 2πr
[tex] \tt = 2 \times \frac{22}{7} \times 14[/tex]
[tex] \tt = \frac{616}{7} [/tex]
= 88 cm
[tex]\purple{\boxed{\blue{\boxed{\green{\star{\orange{\ \: \: \mathcal{JK} \: \: \: {\green{\star}}}}}}}}} [/tex]
Jawaban:
~Bangun datar
Jari-jari = √L ÷ π
= √616 ÷ 22/7
= √616 × 7/22
= √196
= √14^2
= 14 cm
K = 2 × π × r
= 2 × 22/7 × 14
= 2 × 22 × 2
= 2 × 44
= 88 cm
[tex]{\underbrace{\mathfrak{\bold{\blue{MathematicHelper}}}}}[/tex]
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