Matematika

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Julie has 2 different shaped cloth with tue same area. The first cloth is a rectangle with 36cm length and 25cm width. If she wants to decorate both cloths with lace how much lace does she needs?
Julie has 2 different shaped cloth with tue same area. The first cloth is a rectangle with 36cm length and 25cm width. If she wants to decorate both cloths with

1 Jawaban

  • 21. area square = area rectangle
                              =l x w
                              =36 x 25 
                              =900 cm²

        area square =s² = 900 cm²
                               s=√900
                                 = 30 cm
     so length of side square = 30 cm

    22.circumference square = 4 x 30 = 120 cm
         circumference rectangle = 2 ( l+w ) = 2 ( 36+25 ) = 2 x 61 =122 cm
          so lace she needs = 120+122 = 142 cm