Question

The Great Pyramid in Giza, Egypt, is a square pyramid. The dimensions of the pyramid at the time of its completion are shown in the net.
What is the surface area of the Great Pyramid, including the base?

Answer 1

Answer: 138,920 m^2

Step-by-step explanation:

Area for square= l*w*h

Area for triangle = l*w / 2

230 * 230 = 52,900

187 * 230/2 = 21,505

21,505 * 4 (because there are 4 triangles)= 86,020 m

52,900 + 86,020 = 138,920 m^2

(picture provided)

Answer 2

First you would find the area of the square:
        230*230= 52,900
Next you would find the area of one on the triangles:
        230*187=43,010 * 1/2=  21,505
Then you would multiply the area of the one triangle by four:
       21,505*4= 86,020
Finally, you would add the area of the square to the combined area of the triangles:
        86,020+ 52,900=138,920