If each edge is 5 units long, then the total surface area is 5*sqrt(3) = 8.6603 square units, approx.
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If it is a 4 faced tetrahedron pyramid then its complete surface area is 4*80 =320 square centimetres
surface area of a spere=4*pie*r2 when r (radius)=5 pie=22/7 surface area=4*22/7*5*5 =2200/7 =314.2 dm2
The surface area of a sphere with a radius of 5m is 314.2m2
Surface area = 20*pi square units
The surface area of a cube with an edge length of 5 inches is 150 square inches.