Answer :

The answer must be [tex]120\quad m{ m }^{ 2 }[/tex] since the triangular pyramid has 4 faces and each has an area of 30 [tex]m{ m }^{ 2 }[/tex] we should multiply that by 4 , so :

[tex]4\cdot 30\quad m{ m }^{ 2 }=\quad 120\quad m{ m }^{ 2 }[/tex]
ytrenpaisenpai

Answer:

120 i think

Step-by-step explanation: