Find the length of a circle if the area of a regular hexagon inscribed in it is 72√2 cm ^ 2.
May 8, 2021 | education
| To complete this task, you need to find the circumference;
Let’s consider this condition and analyze it.
According to the condition of the task, we are given a circle with an inscribed hexagon of regular shape, and the area of this hexagon is also known.
Let’s write down the formula for a regular hexagon;
S = (3 * √3 * a ^ 2) / 2;
From this formula we find the side of the hexagon “a”;
a ^ 2 = (2 * S / 3 * √3);
a ^ 2 = (2 * 72 * √2 / 3 * √3);
a ^ 2 = 48;
Since the side of the hexagon is equal to the radius of the circle, we find the length of the circle;
L = 2 * P * r;
L = 6.28 * √48.
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