A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 10\times6=60\)

\(\displaystyle 10+10+10+10+10+10=60\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 6\times6=36\)

\(\displaystyle 6+6+6+6+6+6=36\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 8\times6=48\)

\(\displaystyle 8+8+8+8+8+8=48\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 5\times6=30\)

\(\displaystyle 5+5+5+5+5+5=30\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 4\times6=24\)

\(\displaystyle 4+4+4+4+4+4=24\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 3\times6=18\)

\(\displaystyle 3+3+3+3+3+3=18\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 2\times6=12\)

\(\displaystyle 2+2+2+2+2+2=12\)

A regular hexagon has six equal sides. To find the perimeter of a hexagon, we can multiply the known side length by \(\displaystyle 6\) (since there are six sides) or we can add the known side length to itself six times. 

\(\displaystyle 9\times6=54\)

\(\displaystyle 9+9+9+9+9+9=54\)

The perimeter of a circle or circumference is found by using the formula, 

\(\displaystyle c=2\pi r\) 

which also equals 

\(\displaystyle c=d\pi\) 

Identify the given information.

\(\displaystyle \\\textup{diameter}=10 \\ \pi=3.14\)

Substituting the given information into the formula results in the final solution.

\(\displaystyle c=d\pi\)

\(\displaystyle c=10\times 3.14\)

\(\displaystyle c=31.4\)

The formula for the perimeter of a rectangle is \(\displaystyle \dpi{100} P=2l+2w\), where \(\displaystyle \dpi{100} l\) is the length of the rectangle and \(\displaystyle \dpi{100} w\) is the width.

Plug in the numbers that we are given into the equation.

\(\displaystyle \dpi{100} 40=2l +2(8)\)

\(\displaystyle \dpi{100} 40=2l +16\)

\(\displaystyle \dpi{100} 40-16=2l +16-16\)

\(\displaystyle \dpi{100} 24=2l\)

\(\displaystyle \dpi{100} \frac{24}{2}=\frac{2l}{2}\)

\(\displaystyle \dpi{100} l=12\)