Indicate the number of significant figures in 3x 10^6

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 is the total surface area of this square pyramid?

Is the power produced directly proportional to the wind speed, give reasons for your answer?