Square have 4 equal sides length = a
A = 255
A = a^2
255 = a^2 |sqrt
15 = a
P = 4a
P = 4*15 = 60
X = 5 and 2x = 10
the only solution is 5, can be any number
3790241068
Count by 3's from right to left and insert commas after every 3
3,790,241,068
Answer:

Step-by-step explanation:
The question should be :
A solid right pyramid has a square base with an edge length of s units and a height of h units.
The formula for the volume of the pyramid is given by :

A is area of base and h is height.
As edge length is s units.
A = (s)²
So,

So, the required volume is one-thirds s²h unit³.