Answer:

Explanation:
we know that
Kites have two pairs of congruent sides that meet at two different points, and the diagonals of a kite meet at a right angle.
so
In this problem
RP=PO
VR=VO
see the attached figure to better understand the problem
Applying the Pythagoras Theorem

substitute the given values



Remember that
VR=VO
therefore
