Obwod prostokata wynosi 64 cm a jeden z bokow ma 18 cm Oblicz pole tego prostokata Daje Naj
Obwód= 2a+2b
a=18cm
Ob=64cm
64=2*18+2b
64=36+2b |-36
2b=28
b=14cm
a=18cm , b=14cm
P=a*b
P=18cm*14cm=252cm
P= a *b
18 +18 = 36
64- 28 = 32
32 : 2 = 16
P = 14 * 18= 252cm 2
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Obwód= 2a+2b
a=18cm
Ob=64cm
64=2*18+2b
64=36+2b |-36
2b=28
b=14cm
a=18cm , b=14cm
P=a*b
P=18cm*14cm=252cm
P= a *b
18 +18 = 36
64- 28 = 32
32 : 2 = 16
P = 14 * 18= 252cm 2