Question 893155
A right triangle is formed with legs of 18 and 24, and a hypotenuse being the diagonal.


Use the Pythagorean Theorem
a² + b² = c²
a and b are the legs
c is the hypotenuse


18² + 24² = c² {substituted 18 for a and 24 for b}
324 + 576 = c² {evaluated exponents}
900 = c² {added}
c = 30 {took the square root of each side}


The size is 30 inches
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