Question

The corners of a square are cut off two centimeters from each corner to form an octagon. If the octagon is 10 centimeters wide, what is it's area?

Answer 1

start by drawing a diagram



find the area of the square, with edge length 10

then find the area of 1 triangle base= 2cm height = 2cm

The area of the octagon is

Area = Area of the square - 4 x area of the triangles

hope it helps