Question

Find the area of a regular octagon with

a side length of 12 cm. Round to the
nearest tenth.
12 cm
[ ? ] cm2

Answer 1

I believe the answe is A

Answer 2

A= 695.3cm²

Explanation:

• We khow that the area of anctagon is : A= 2(1+
  `√(2)`)*a² with a the side
• so A= 2(1+√2)*a² = 695.29= 695.3 cm²