Find the Mass of the Lamina Bounded by the Graphs $y = \sqrt { 441 - x ^ { 2 } }$

Multiple Choice

Find the mass of the lamina bounded by the graphs of the equations $y = \sqrt { 441 - x ^ { 2 } }$ and $0 \leq y \leq x$ for the density $\rho = k$

A) $\frac { 441 \pi k } { 4 }$
B) $\frac { 445 \pi k } { 8 }$
C) $\frac { 441 \pi k } { 8 }$
D) $\frac { 457 \pi k } { 8 }$
E) $\frac { 445 \pi k } { 4 }$