Respostas

2014-03-31T18:56:09-03:00
169=25+x²
x²=169-25=144
x=√144
x=12

2014-03-31T18:57:07-03:00
5²-13²
25x²=169
x²=169-25
x²=144
x= raiz quadrada de 144
x=12
a outra medida sera 12cm
1 5 1