The scientific notation 3.14×10^-3 has what value

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

What dimensions can créate more than one triangle ?