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I need help solving this equation for my math homework

I need help solving this equation for my math homework-example-1
User Arisa
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1 Answer

3 votes

Given:

There are given that the diameter of the semicircle is 36.6mm.

Step-by-step explanation:

To find the perimeter, first, we need to find the value of radius r.

So,

From the formula:


\begin{gathered} r=(d)/(2) \\ r=(36.6)/(2) \\ r=18.3mm \end{gathered}

Now,

From the formula of the perimeter of the semicircle:


P=(\pi+2)r

Then,

Put the values into the above formula:

So,


\begin{gathered} P=(\pi+2)r \\ P=(3.14+2)18.3 \\ P=(5.14)(18.3) \\ P=94.062mm \end{gathered}

Final answer:

Hence, the value of the perimeter is shown below:


P=94.06\text{ millimeters}

User Hsoi
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