Question

the lenghth of one side of a right angle triangle is 45 cm and the lenghth of hypotenuse is 75 cm .find the lenghth of its third side​

Answer 1

60

$a^2+b^2=c^2$

let a=45, b=x, c=75

so,

$45^2+x^2=75^2$

$=2025+x^2=5625$

$x^2=5625-2025\\=3600$

$x=\sqrt{3600} \\=60$