The value of x = 20 units.
A triangle which has one angle as 90 degree is called a Right Angled Triangle , Pythagoras theorem can be used to determine the value of the sides.
In triangle
SRQ , SRT & TRQ
x² + SR² = 25²
9² + RT² = SR²
x² = 16² + RT²
Substituting the values we get
x² +9² +x² - 16² = 25²
2x² = 800
x² = 400
x = 20
Therefore the value of x = 20 units.
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