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L = s x s
= 9 x 9
= 81
1.b
k = 4 x s
= 4 x 9
= 36
2. sisi = L : 4
= 40 : 4 =10
L = s x s
= 10 x 10
100
3. L = 2 x ( p+l)
=
: 9*9
: 81 cm persegi
b keliling: 4 *s
: 4*9
: 36 cm
2 kll:4s
40:4s
s: 10 cm
luas: s pngkat 2
: 10 pngkt 2
: 100 cm
3 luas: p* l
: 25*20
:500 cm persegi
kll: 2( p+l )
: 2(25+20)
: 2(45)
: 90 cm