Area of regular polygons day 2

What is the area of an octagon with side length 8. Round your final answer to the nearest. whole. number

What is the area of a decagon with side length 4. Round your final answer to the nearest tenth.

Tags

CCSS.HSG.GPE.B.7

What is the area of a pentagon with radius 3. Round your final answer to the nearest tenth.

Tags

CCSS.HSG.GPE.B.7

What is the area of a nonagon with radius 7. Round your final answer the the nearest tenth.

What is the area of a dodecagon with radius 20. Round your final answer to the nearest whole number.

Find the area of a 20-gon with radius 2. Round your final answer to the nearest tenth.

Tags

CCSS.HSG.GMD.A.1

CCSS.HSG.GPE.B.7

Find the area of a 15-gon with perimeter 180. Round your final answer to the nearest tenth.

Find the perimeter of a regular heptagon with an apothem of 10. Round your final answer to the nearest tenth.

The Pentagon in Arlington, Virginia, is one of the world's largest office buildings. It is a regular pentagon, and the length of each of its sides is 921 feet. What is the area of land that the Pentagon covers to the nearest square foot? (no commas)

Tags

CCSS.HSG.GPE.B.7

A stop sign is a regular octagon. The standard size has a 16.2 inch radius. What is the area of the stop sign to the nearest square inch?