Explicación paso a paso:
1)
r+2=7
r=5
PERIMETRO : 7+7+5+5
14+10
2
2)
3X=3(7)=21
PERIMETRO:21+21+21+21
84
3)
2a=2(11)=22
4
a=11
Perimetro: 22+22+4+11+11
44+26
70
4)
5(8)=40
3(8)=24
7(8)=56
2(8)+5=16+5=21
PERIMETRO : 40+24+56+21
61+80
141
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Verified answer
Explicación paso a paso:
1)
r+2=7
r=5
PERIMETRO : 7+7+5+5
14+10
2
2)
3X=3(7)=21
PERIMETRO:21+21+21+21
84
3)
2a=2(11)=22
4
a=11
Perimetro: 22+22+4+11+11
44+26
70
4)
5(8)=40
3(8)=24
7(8)=56
2(8)+5=16+5=21
PERIMETRO : 40+24+56+21
61+80
141