tolong bantu y besok dikumpulkan

[tex]2) \: \sqrt{ {150}^{2} - {120}^{2} } = \sqrt{(150 - 120)(150 + 120)} = \\ \sqrt{270(30)} = \sqrt{ {3}^{4}( {10}^{2} ) } = 9 \times 10 = 90 \\ tinggi \: layang \: layang \: dari \: permukaan \: tanah \: = 90 + 1.5 \\ = 91.5 \: m[/tex]
[tex]3) \: \: ad = \sqrt{ {26}^{2} - {24}^{2} } = \sqrt{(50)(2)} = 10 \\ bd = \sqrt{ {40}^{2} - {24}^{2} } = \sqrt{(16)(64)} = 32 \\ ab = 10 + 32 = 42[/tex]
[tex]4) \: \: \sqrt{ {100}^{2} - {60}^{2} } = \sqrt{(160)(40)} = \sqrt{(16)(100)(4)} = 80 \: meter[/tex]
[tex] \sqrt{ {6}^{2} + {2}^{2} } = \sqrt{40} = 2 \sqrt{10} \: cm[/tex]