Lesson Worksheet: Areas of Regular Polygons Mathematics
In this worksheet, we will practice finding areas of regular polygons given their side lengths using a formula.
The side length of a regular pentagon is 13 cm. Find the area of the pentagon giving the answer to three decimal places.
If four congruent triangles are cut off from the corners of the rectangle to make an octagon as shown, what is the area of the octagon?
A regular octagon has a side length of 88 cm. Find the area giving the answer to two decimal places.
The base of a fish tank is a regular pentagon with a side length of 189 cm. Find the area of the base to the nearest square centimeter.
The side length of a regular pentagon is 6 cm. Find the area of the pentagon giving the answer to three decimal places.
Complete the following: The area of a regular octagon with perimeter 40 is .
Find the side length of a seven-sided regular polygon with an area of 817.63 cm2.
Complete the following: The area of a regular polygon can be calculated using the formula , where is the number of sides and is the side length.
Which of the following is the formula that is used to calculate the area of a regular -sided polygon with side length ?
Which of the following is the area of a regular hexagon with a perimeter of 120 cm?
- A cm2
- B cm2
- C cm2
- D cm2
- E cm2