Answer:
Then length of diagonal is 5√(2)
Step-by-step explanation:
Perimeter(p)=20
Perimeter of square(p)=4xLength(L)
20=4 x L
Divide both sides by 4
20/4=4L/4
5=L
L=5
Length of diagonal=√(5^2+5^2)
Length of diagonal=√(5x5+5x5)
Length of diagonal=√(25+25)
Length of diagonal=√(50)
Length of diagonal=√(25x2)
Length of diagonal=√(25)x√(2)
Length of diagonal=5x√(2)
Length of diagonal=5√(2)
