Answer
203m^2
Step by Step:
Well to find the total SA of the following pyramid we need to find the area of one triangle and multiply and the square.
so let’s start with the square the square is a 7 by 7 so it’s area is 49 and the triangle has a height of 11 and a base of 7 so using to formula b*h / 2 we get 38.5 after dividing 77 by 2.
So now to get the areas of all 4 triangles we do 38.5 * 4 which is 154.
And now we add 154+49 = 203m^2.
