About 13.4 square meters. (13.3780378 square meters)
48 square meters
13.38 square meters.
12! square-based prism = rectangular prism. rectangular prism = 4 + 4 + 4 4+4+4=12
20.07 square meters.
144 square meters
About 13.4 square meters. (13.3780378 square meters)
48 square meters
13.38 square meters.
78 x 12 = 936 square meters.
12
12 square meters
12! square-based prism = rectangular prism. rectangular prism = 4 + 4 + 4 4+4+4=12
23.41 square meters.
13.39 square meters.
20.07 square meters.
The dimensions are 7 by 12 meters Check: perimeter = 2*(7+12) = 38 meters and area = 7*12 = 84 square meters