Solve
-The Graph Shows the Relationship Between the Area $\mathrm { A }$

Solve.
-The graph shows the relationship between the area $\mathrm { A }$ of a rectangle and the length $\mathrm { L }$ , if the width is fixed. Find the area if the length is $7 \mathrm {~cm}$ .

A) $63 \mathrm {~cm} ^ { 2 }$
B) $28 \mathrm {~cm} ^ { 2 }$
C) $35 \mathrm {~cm} ^ { 2 }$
D) $49 \mathrm {~cm} ^ { 2 }$