Tolong plissss jangan asal” BESOK DI KUMPUL

[tex]rumus \: la = \frac{a \times b}{2} \\ volume = \frac{a \times b}{2} \times t \: atau \: luas \: alas \times t[/tex]

[tex]1. \\ la = \frac{10 \times 24}{2} = 120 {cm}^{2} \\ volume = (\frac{10 \times 24}{2} ) \times 30 = 3600 {cm}^{3} [/tex]

[tex]2. \\la = \frac{16 \times 30}{2} = 240 \\ v = 240 \times 45 = 10800[/tex]

[tex]3. \\ la = \frac{15 \times 20}{2} = 150 \\ v = 150 \times 38 = 5700[/tex]

[tex]4. \\ volume = (\frac{a \times b}{2} ) \times t \\ 11340 = (\frac{15 \times 36}{2} ) \times t \\ 11340 = 270 \times t \\ t = 42[/tex]

[tex]5. \\ a = 8cm = 0.8dm \\ la = \frac{0.8 \times 15}{2} = 6 \\ \\ 1560 = ( \frac{0.8 \times 15}{2} ) \times t \\ 1560 = 6 \times t \\ t = 260[/tex]

[tex]6. \\ b = 24cm = 2.4dm \\ la = \frac{2.4 \times 10}{2} = 12 \\ \\ 4200 = ( \frac{2.4 \times 10}{2} ) \times t \\ 4200 = 12 \times t \\ t = 350[/tex]

[tex]7. \\ la = \frac{21 \times 28}{2} = 294 \\ volume = 294 \times 46 = 18816[/tex]

[tex]8. \\ la = \frac{24 \times32 }{2} = 384 \\ v = 384 \times 51 = 19584[/tex]

[tex]9. \\ 5100 = ( \frac{a \times20 }{2} ) \times 34 \\ 150 = \frac{20 \times a}{2} \\ 300 = 20 \times a \\ a = 15 \\ \\ la = \frac{15 \times 20}{2} \\ la = 150[/tex]

[tex]10. \\ 31200 = ( \frac{ 20\times b}{2} ) \times 65 \\ 480 = \frac{20 \times b}{2} \\ 960 = 20 \times b \\ b = 48 \\ \\ la = \frac{20 \times 48}{2} \\ la = 480[/tex]

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