What the output from the following machine when the input is 4

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

What is the total surface area of this square pyramid?

Which strategy is used by public health to reduce the incidence of food poisoning?