Use the Pythagorean theorem:
a^2 + b^2 = c^2
a = sqrt (c^2 - b^2)
Where:
a=the height (pyramid height from base to peak)
b=the base length
c = the hypotenuse (slant) length
Chat with our AI personalities
LA=1/2ps
Surface area of any pyramid is 1/2Pl + B; where P=perimeter of the base, l=slant height and B= Area of the base.
By using trigonometry or Pythagoras' theorem
I don't know not mine
Why do you need to FIND the slant height if you have the [lateral height and] slant height?