Question

Solve for x in the diagram.

Answer 1

Answer:

x = 15

Step-by-step explanation:

Using Pythagorean Theorem

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

Where c= x, a = 12, b = 9

=> $x^2 = (12)^2+(9)^2$

=> $x^2 = 144+81$

=> $x^2 = 225$

Taking sqrt on both sides

=> x = 15

Answer 2

12^2-9^2 =63
Square root of 63 is 7.93725...
Answer is 7.94 rounded up