Tolong di jawab semuanya susah banget besok dikumpulin pliss pake caranya
Matematika
akhiruaini
Pertanyaan
Tolong di jawab semuanya susah banget besok dikumpulin pliss pake caranya
1 Jawaban
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1. Jawaban SN08
no 2
[tex] {x}^{2} = {10}^{2} - ( {8}^{2} - {2}^{2} ) \\ {x}^{2} = 100 - (64 - 4) \\ {x}^{2} = 100 - 60 \\ x = \sqrt{40 } = 2 \sqrt{10} cm[/tex]
no 3
[tex] {16}^{2} = {20}^{2} - ( {15}^{2} - {x}^{2} ) \\ 256 = 400 + {x}^{2} - 225 \\ 256 = 175 + {x}^{2} \\ 256 - 175 = {x}^{2} \\ 81 = {x}^{2} \\ x = \sqrt{81} = 9cm[/tex]