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08 Maret 2024 01:51

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Tiara A

08 Maret 2024 01:51

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Sumber W

Community

08 Maret 2024 16:21

Jawaban terverifikasi

<p>Jawaban yang tepat adalah</p><ul><li>Busur AB = 39,25 cm</li><li>Luas Juring = 196,25 cm<sup>2</sup></li></ul><p>&nbsp;</p><p>Pembahasan :</p><p>&lt;AOB = 225°</p><p>d = 20 cm</p><p>r = 10 cm</p><p>𝞹 = 3,14</p><p>&nbsp;</p><p>Busur AB = &lt;AOB/360° x 𝞹 x d</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 225°/360° x 3,14 x 20</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 5/8 x 3.14 x 20</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 39,25 cm</p><p>&nbsp;</p><p>Luas Juring = &lt;AOB/360° x 𝞹 x r<sup>2</sup></p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 225°/360°x 3,14 x 10<sup>2</sup></p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 5/8 x 3,14 x 100</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 196,25 cm<sup>2</sup></p>

Jawaban yang tepat adalah

  • Busur AB = 39,25 cm
  • Luas Juring = 196,25 cm2

 

Pembahasan :

<AOB = 225°

d = 20 cm

r = 10 cm

𝞹 = 3,14

 

Busur AB = <AOB/360° x 𝞹 x d

                    = 225°/360° x 3,14 x 20

                    = 5/8 x 3.14 x 20

                    = 39,25 cm

 

Luas Juring = <AOB/360° x 𝞹 x r2

                         = 225°/360°x 3,14 x 102

                         = 5/8 x 3,14 x 100

                         = 196,25 cm2


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12 Maret 2024 20:33

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Tjendana T

Community

08 Maret 2024 12:29

Jawaban terverifikasi

<p>Jawaban&nbsp;</p><p>Panjang busur = <strong>12,5π cm</strong></p><p>Luas juring = <strong>62,5π cm²</strong></p><p>&nbsp;</p><p>&nbsp;</p><p><strong>Pembahasan&nbsp;</strong></p><p>Panjang busur = (sudut pusat/360) × keliling lingkaran</p><p>&nbsp; &nbsp; = 225/360 × π × 20</p><p>&nbsp; &nbsp; = 12,5π cm</p><p>&nbsp;</p><p>Luas juring = (sudut pusat/360) × luas lingkaran</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 225/360 × ¼π. 20²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 62,5π cm²</p>

Jawaban 

Panjang busur = 12,5π cm

Luas juring = 62,5π cm²

 

 

Pembahasan 

Panjang busur = (sudut pusat/360) × keliling lingkaran

    = 225/360 × π × 20

    = 12,5π cm

 

Luas juring = (sudut pusat/360) × luas lingkaran

              = 225/360 × ¼π. 20²

              = 62,5π cm²


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