Let D be the upper half of the unit disk. Assume it has density $\rho ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }$ Find the mass of D.

Name: Let D be the upper half of the unit disk. Assume it has density $\rho ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }$ Find the mass of D.
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The Answer of Let D be the upper half of the unit disk. Assume it has density $\rho ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }$ Find the mass of D.

Let D Be the Upper Half of the Unit Disk ρ(x,y)=x2+y2\rho ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }ρ(x,y)=x2+y2​

Let D Be the Upper Half of the Unit Disk $\rho ( x , y ) = \sqrt { x ^ { 2 } + y ^ { 2 } }$