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Solution: What is the area of the circle not covered by the star?

What is the area of that part not covered by the star?

Problem Statement: EE Board April 1990

In a circle of diameter of 10 m, a regular five-pointed star touching its circumference is inscribed. What is the area of that part not covered by the star?

Problem Answer:

The area of that part not covered by the star is 50.5 sq. m .

Solution:

Latest Problem Solving in Plane Geometry

div.feedburnerFeedBlock ul li {background: #E2F0FD;
list-style-type: none;
margin:0 0 5px 0px;
padding:5px 5px 5px 10px !important;
border: 1px solid #0080ff;
border-radius:8px;
-moz-border-radius:8px;
-webkit-border-radius:8px;
}

div.feedburnerFeedBlock ul li:hover {
background:#ffffff;
}

div.feedburnerFeedBlock ul li a{
color:#ffffff;
text-decoration:none;
}

div.feedburnerFeedBlock ul li a:hover {
text-decoration: underline;
color: #000000;
}
div #creditfooter{
display: none;
}

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