Hi,  

Using the Pythagorean Theorem:  a^2 + b^2 = c^2

 s^2 + s^2 = (10cm)^2

    2s^2 = 100cm^2

     s^2 = 50cm^2  Tossing out the negative solution

      

RELATED QUESTIONS

A square has a side length of 20 cm.  If a diagonal is drawn, what is the length of the... (answered by josgarithmetic)

Find the length of the side of a square whose diagonal is 24... (answered by engineersin)

Help! 

Find the length of the diagonal of a cube with side length 10... (answered by RAY100)

the length of a diagonal of the square is 36 cm find the length of each... (answered by palanisamy)

find the length of a diagonal of a 10 cm by 10 cm... (answered by checkley77)

Find the length of the side of a square if the length of the diagonal 10.  (answered by nerdybill)

What is the length of the diagonal of a 10 cm by 15 cm... (answered by Alan3354)

Find the length of the diagonal of a square wide side 3... (answered by checkley79)

What is the side length (in centimetres) of a rectangle with diagonal 12... (answered by Alan3354)