Answer:
16.0"
Explanation:
ASSUME the pyramid is a square right pyramid.
height = 15"
base side length = 11"
(Following edited/corrected thanks to cwrw238)
Slant height
= sqrt(5.5²+15²) using Pythagoras theorem
= sqrt(255.25)
= 15.98"
Slant height = 15.98 in to nearest hundredth.
Use Pythagoras theorem.
The triangle we want has a height of 15 , base of 1/2*11 = 5.5 and we need the length of the hypotenuse.
h^2 = 5.5^2 + 15^2 = 255.25
h = 15.976.
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