RC Circuits

What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?

A 4.24

B 3.46

C 2.16

D 21.63

ANS:D - 21.63

We can prove this problem by pythagoras theorem AC^2 = AB^2+BC^2.

12^2 = 144.
18^2 = 324.
324+144 = 468.
ROOT OF 468 = 21.63.

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