devinhastings devinhastings 08-05-2020 Mathematics contestada Use the net to determine the total surface area. The net of a triangular pyramid has an equilateral triangle as its base with edges of 12 centimeters, lateral edges of 12 centimeters, and lateral height of 10.4 centimeters is laid flat. 249.6 cm2 499.2 cm2 108 cm2 278.4 cm2