Answer:
Easy!
Step-by-step explanation:
1) To find the surface area of a regular triangular pyramid, we use the formula SA = A + (3/2)bh, where A = the area of the pyramid's base, b = the base of one of the faces, and h = height of one of the faces.
or
2)Multiply the side length of the base by the slant height and divide by two. Then, multiply by 4. This will give you the lateral surface area of the pyramid. Add the base surface area and the lateral surface area.
You have to do length of the base x width of the base x height of pyramid
Is 0 because it's to the power of zero
Answer:
15
Step-by-step explanation:
5x + 2 = 77
5x = 77 - 2
5x = 75
5x/5 = 75/5
x = 15
