1 Answer

Paullth · Answer 1 · 2023-08-29T09:07:00+0000

Recall that the perimeter of the triangle ABC is given by the following formula:

$Perimeter=AB+BC+CA\text{.}$

Substituting the given data we get:

$100\operatorname{cm}=45\operatorname{cm}+32\operatorname{cm}+CA\text{.}$

Solving the above equation for CA we get:

$\begin{gathered} CA=100\operatorname{cm}-45\operatorname{cm}-32\operatorname{cm} \\ =23\operatorname{cm}\text{.} \end{gathered}$

Answer: The length of CA is 23cm.

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