anonymous
  • anonymous
a square pyramid's base is 7m its height i 14m 1hat is the surface area
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@Vocaloid i want to try to solve this and i will gladly fan you and give you a medal if possible
anonymous
  • anonymous
it is a square pyramid the base of the triangles are 7 and the height is 14 and the base is 7 and height is 7 for the square
Vocaloid
  • Vocaloid
oh wait hold on, my formula is wrong > >

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Vocaloid
  • Vocaloid
let me draw it out first
Vocaloid
  • Vocaloid
|dw:1443835908080:dw|
Vocaloid
  • Vocaloid
ok, first step is to find the area of the bottom|dw:1443835987601:dw| what is the area is this square?
anonymous
  • anonymous
49
Directrix
  • Directrix
The formula for the surface area of a regular square pyramid is this: SA = B + 1/2 * p * L where B is the area of the square base, p is the perimeter of the square base, and L is the slant height of the pyramid.
Directrix
  • Directrix
You already have the value of B, the base, to be 49.
Directrix
  • Directrix
The perimeter of the base is 28. |dw:1443837360372:dw|
Directrix
  • Directrix
Finding the slant height will involve using the Pythagorean theorem. @galaxystare We will pick up at that point when you are back online.
anonymous
  • anonymous
@Directrix i need the area|
Directrix
  • Directrix
Find the slant height of the regular pyramid. It is the height of one of the triangular faces of the pyramid. Slant height is not the same as the height of the pyramid.
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Directrix
  • Directrix
Use the Pythagorean Theorem: L^2 = 14^2 + (3.5)^2 @galaxystare Solve for L and post what you get, okay?

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