The radius of the sphere passing through the point (alpha , beta , gamma ) and the circle x^2 +y^2 =a^2 , z =0

### Question Asked by a Student from EXXAMM.com Team

Q 2187880787.     The radius of the sphere passing through the point

(alpha , beta , gamma ) and the circle x^2 +y^2 =a^2 , z =0 is

(a^2 - alpha^2 - beta^2 - gamma^2)/r
A True
B False

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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