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26 April 2024 12:03

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Gifani A

26 April 2024 12:03

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26 April 2024 22:54

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<p>1. Luas Permukaan Limas (L)</p><p>&nbsp; &nbsp; L = L. alas + 4 x L. Sisi tegak</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= (s x s) + (4 x (1/2 x s x t))</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= (7 x 7) + (4(1/2 x 7 x 10))</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 49 + (4(35))</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 49 + 140</p><p>&nbsp; &nbsp; &nbsp; &nbsp;=<strong> 189 cm<sup>2</sup></strong></p><p>&nbsp;</p><p>2. Volume Kerucut (V)</p><p>&nbsp; &nbsp; &nbsp;d = 15 cm</p><p>&nbsp; &nbsp; &nbsp;r = 15/2 = 7,5 cm</p><p>&nbsp; &nbsp; &nbsp;𝞹 = 3,14</p><p>&nbsp; &nbsp; &nbsp;t = 48 cm</p><p>&nbsp; &nbsp; &nbsp;V = 1/3 x 𝞹 x r<sup>2</sup> x t</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 1/3 x 3,14 x 7,5 x 7,5 x 48</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= <strong>2.826 cm<sup>3</sup></strong></p>

1. Luas Permukaan Limas (L)

    L = L. alas + 4 x L. Sisi tegak

       = (s x s) + (4 x (1/2 x s x t))

       = (7 x 7) + (4(1/2 x 7 x 10))

       = 49 + (4(35))

       = 49 + 140

       = 189 cm2

 

2. Volume Kerucut (V)

     d = 15 cm

     r = 15/2 = 7,5 cm

     𝞹 = 3,14

     t = 48 cm

     V = 1/3 x 𝞹 x r2 x t

         = 1/3 x 3,14 x 7,5 x 7,5 x 48

         = 2.826 cm3


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