Solve the System Graphically $2122 \mathrm {~m} ^ { 2 }$

Solve the system graphically.
-The sum of the areas of two square plots of land is $2122 \mathrm {~m} ^ { 2 }$ and the difference of their areas is $1240 \mathrm {~m} ^ { 2 }$ . Find a length of a side of each plot.

A) $22 \mathrm {~m} , 62 \mathrm {~m}$
B) $41 \mathrm {~m} , 21 \mathrm {~m}$
C) $40 \mathrm {~m} , 20 \mathrm {~m}$
D) $5.25 \mathrm {~m} , 41 \mathrm {~m}$