Answer:
Step-by-step explanation:
This time we'll do this using 1 formula to get the answer.
Givens
n = 9 (number of sides in an 9-gon.
inradius (apothem) = a= 7
Formula
Area = a^2 * n * tan(180/n) Substitute
Solution
Area = 9^2 * 9 * tan(180/9) Combine
Area = 81 * 9 * tan(20)
Area = 729 * tan (20)
Area = 265.33
Area rounded = 265
