The square pyramid shown below has a base with sides of 12 units. The vertical height of the pyramid is 15
units.
15
12

Answer:
Step-by-step explanation:
use Pythagorean theorem:
a² + b² = c²
where a = 12/2 = 6
b = 15
c = s
plugin values into the formula:
6² + 15² = s²
s = √(6² + 15²)
s = √261
s = 16.2 units