a square has each side of 5 cm find the length of one of its diagonal
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We are given with the side of the square as = 5 cm .
Directly we can use the formula to find the diagonal of the square as :
a√2 units
= 5√2 units.
But it is used by senior classes only .
Till 8 th grade you have to use the below method :
In the square prepare the diagonal, then 2 imaginary triangles formed there.
Take any of the triangle with two equal sides as 5 cm.
We can find out the diagonal by using Pythagoras Theorem :
H²= B²+P²
H² = 5²+5²
H²=50
H = 5√2 cm
The required diagonal is of 5√2 cm.
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