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
Matematika
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Pertanyaan
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?
1 Jawaban
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1. Jawaban niesrinaasmadina
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