59,954 views
5 votes
5 votes
Find the area of the shaded piece. Round the nearest HUNDREDTH, if needed. AC = 30 and m

Find the area of the shaded piece. Round the nearest HUNDREDTH, if needed. AC = 30 and-example-1
User Brian Newman
by
3.4k points

1 Answer

19 votes
19 votes

Solution

The diagram below will be of help

Note: Area of a Sector Formula


Area=(\theta)/(360)*\pi r^2

Here


\begin{gathered} r=15 \\ \theta=55^(\circ) \end{gathered}

Substituting the parameters


\begin{gathered} Area=(\theta)/(360)\pi r^(2) \\ Area=(55)/(360)*\pi*15^2 \\ Area=(275)/(8)\pi \end{gathered}

There are two shaded portion (with the same Area)

Therefore, the area will be


\begin{gathered} Area=2*(275)/(8)\pi \\ Area=(275)/(4)\pi \\ Area=215.9844949 \\ Area=215.98\text{ square unit \lparen to the nearest hundredth\rparen} \end{gathered}

The answer is


\begin{equation*} 215.98\text{ square unit \lparen to the nearest hundredth\rparen} \end{equation*}

Find the area of the shaded piece. Round the nearest HUNDREDTH, if needed. AC = 30 and-example-1
User Michael Shum
by
2.7k points