Question

what is x? 21 in. 28 in. x 7 inches 49 inches 12 inches 35 inches

Explanation:

Step1: Apply Pythagorean theorem

For right triangle: $x^2 = 21^2 + 28^2$

Step2: Calculate squared terms

$21^2=441$, $28^2=784$

Step3: Sum squared values

$x^2=441+784=1225$

Step4: Solve for x

$x=\sqrt{1225}=35$

Answer:

35 inches