Base of an equilateral triangle with side length of 4cm. the height of the of the pyramid
15 cm. Find volume?

I HATE

Step-by-step explanation:

D1 & d2 are the diagonal lengths 
-side of a rhombus, if diagonals are given, can be calculated by 
s = sqrt(d1^2 + d2^2) 
  this is just pythagorean theorem 

side  = sqrt(24^2 + 18^2) 
side = sqrt(900) 
side = 30 cm 

perimeter = 4*s 
perimeter = 4*30 
perimeter = 120 cm
thats all  i can with, idk about the distance part