A point P moves so that is equidistant from point L and M. If LM is 6cm, find the distance of P from LM when P is 10cm from L

A.
12cm 
B.
10cm 
C.
8cm 
D.
6cm
Correct Answer: Option D
Explanation
p from LM = (sqrt{10^2}) – 8^{2}
= (sqrt{36}) = 6cm