Sebuah ruang tamu mempunyai alas berbentuk persegi dengan panjang sisi 3 m dan tinggi 4 m pada ruang tamu tersebut terdapat jendela berukuran 4 m² dan 2 pintu masing-masing 2 meter persegi dinding ruang tersebut akan dicat berwarna hijau 1 kaleng cat ukuran 5 kg dapat digunakan untuk menutup 15 meter persegi dinding dengan harga perkalian rp100.000 toko a hanya menjual cat tersebut berkaleng jika uang Dina hanya 360.000 berapa sisa uang Dina setelah membeli cat

<p><i><u>Lp balok (dinding</u></i>) = pl + (2 x (pt + lt))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= (3 x 3) + (2 x ((3 x 4) + (3 x 4))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 9 + 48<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 57 m²<br><i><u>Lp</u></i> = (Lp dinding - Lp jendela - Lp 2 pintu) ÷ 15 m²<br>&nbsp; &nbsp; = (57 - 4 - 4) ÷ 15<br>&nbsp; &nbsp; = 49 ÷ 15<br>&nbsp; &nbsp; = 3,26 m²<br><i><u>Uang untuk membeli cat</u></i> = 100.000 x 3,26<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= Rp 326.000,00<br><i><u>Sisa Uang Dina</u></i> = 360.000 - 326.000<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = <strong>Rp 34.000,00</strong></p><p>Maaf kalau salah :)</p>