A square has four even sides and the perimeter is equal to the sum of all of the sides.
![P=s+s+s+s=4s](https://tex.z-dn.net/?f=P%3Ds%2Bs%2Bs%2Bs%3D4s)
So we can evaluate the equation for P and then solve for s.
Answer:
0.89736
Step-by-step explanation:
We solve this question using z score formula
Z score = x - μ/σ
x = raw score
μ = population mean
σ = population standard deviation
Hence,
x = 258, μ = 220, σ = 30
Z = 258 - 220/30
=1.26667
Probability value from Z-Table:
P(x<258) = 0.89736
Therefore, the probability that his weights is less than 258 kg is 0.89736