If \[P\equiv (x,y),{{F}_{1}}\equiv (3,0),{{F}_{2}}\equiv (-3,0)\] and \[16{{x}^{2}}+25{{y}^{2}}=400,\] then \[P{{F}_{1}}+P{{F}_{2}}\] equals

If \[P\equiv (x,y),{{F}_{1}}\equiv (3,0),{{F}_{2}}\equiv (-3,0)\] and

1.	If \[P\equiv (x,y),{{F}_{1}}\equiv (3,0),{{F}_{2}}\equiv (-3,0)\] and \[16{{x}^{2}}+25{{y}^{2}}=400,\] then \[P{{F}_{1}}+P{{F}_{2}}\] equals
A.	8
B.	6
C.	10
D.	12
Answer» D. 12

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If \[P\equiv (x,y),{{F}_{1}}\equiv (3,0),{{F}_{2}}\equiv (-3,0)\] and \[16{{x}^{2}}+25{{y}^{2}}=400,\] then \[P{{F}_{1}}+P{{F}_{2}}\] equals

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