# Chapter 3 - Vectors - Problems - Page 57: 10c

$r_{z}=-2.8$ m

#### Work Step by Step

if $\overrightarrow {r}$ is the sum of two vectors $\overrightarrow {r}=\overrightarrow {c}+\overrightarrow {d}$, then $\Rightarrow$ $r_{x}=c_x+d_x;$ $r_y=c_y+d_y;$ $r_{z}=c_{z}+d_{z}$ So we get, $r_{z}=c_{z}+d_{z}=(-6.1)+(3.3)=-2.8$ m

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