Homework Help: math

Posted by m on Wednesday, January 5, 2011 at 8:04am.

find the perimeter of a square with a diagonal of 6 square root 2 in.

I am not sure how to figure out this perimeter.

math - Dr Russ, Wednesday, January 5, 2011 at 8:10am
You are told it is a square so the sides are of equal length, a.

If we wanted to find the length of the diagonal of a square with sides length a, then

diagonal = sqrt(2a^2)
=6sqrt(2)

sqrt(2a^2)= 6sqrt(2)
2a^2 = 36 x 2

a^2 = 36

so a=6

now find the perimeter

Related Questions

geometry - the length of a diagonal of a square is 22 square root of 2 ...
Geometry - If the diagonal of a square has a length of 10 suare root of 2 cm, ...
Algebra - Rationalize each expression by building perfect nth root factors for ...
Math Help - the square root of 3 times the square root of 15 also the square ...
math - What does it mean to have the sqaure root of 5 with a 2 in front of it? ...
Math - Just need some help... Directions: Multiply or raise to the power as ...
Math - What are the solution sets of the following 3 problems,the square root of...
math/algebra - I have a triangle one side = 3 side 2 = square root5 - square ...
Math - How do I figure these 2 out. Find standard form a +bi (4 square root -9...
Square roots - The diagonal of a square has length square root 2 X s, where s is...

For Further Reading

First Name:
School Subject:
Answer: