SOLUTION: Mathew cuts four right angled triangles from the corners of a square cardboard. What is the perimeter of the cardboard after Mathew cuts out the triangles?
the side of the squa
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Question 959232: Mathew cuts four right angled triangles from the corners of a square cardboard. What is the perimeter of the cardboard after Mathew cuts out the triangles?
the side of the square is 8 units, and the right triangles on the corners are 2 units per leg.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
The uncut portion of the square=8in-2(2in)=8in-4in=4inches
The length of diagonals is hypotenuse of right triangle with legs=2 inches:
The four diagonal cuts==
There are four slanted corners and four uncut portions so:
==
ANSWER: The perimeter of the irregular octagon is 27.3 inches.
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