Lesson: Areas of Regular Polygons

Find the area of a regular 14-sided polygon given the side length is 21 cm. Give the answer to two decimal places.

Find the area of a regular 15-sided polygon given the side length is 66 cm. Give the answer to two decimal places.

The side of a regular octagon is 5 cm long. Find the area of the octagon giving the answer to two decimal places.

The side length of a regular pentagon is 13 cm. Find the area of the pentagon giving the answer to three decimal places.

The side length of a regular pentagon is 6 cm. Find the area of the pentagon giving the answer to three decimal places.

The perimeter of a regular pentagon is 85 cm. Find the area giving the answer to the nearest square centimeter.

Find the area of a regular hexagon with a side length of 35 cm giving the answer to two decimal places.

Find the area of a regular hexagon with a side length of 38 cm giving the answer to two decimal places.

A regular heptagon has a side length of 89 cm. Find the area giving the answer to two decimal places.

A regular heptagon has a side length of 36 cm. Find the area giving the answer to two decimal places.

The side of a regular octagon is 11 cm long. Find the area of the octagon giving the answer to two decimal places.

The perimeter of a regular pentagon is 70 cm. Find the area giving the answer to the nearest square centimeter.

Find the area of the shaded region rounded to the nearest tenth.

Find the area of the shaded region rounded to the nearest tenth.

The shown figure represents a circle inside a regular hexagon. Find the area of the shaded regions, giving your answer to the nearest tenth.

Find the total area of the shaded regions in the regular polygons below, giving your answer to the nearest tenth.