Peter needs to find the length of the diagonal of the square white flag, which is also the length of the red ribbon needed to make the "X."
We can use the Pythagorean theorem to find the length of the diagonal:
d^2 = 12^2 + 12^2
d^2 = 144 + 144
d^2 = 288
d = sqrt(288)
d ≈ 16.97
Therefore, Peter will need approximately 17 centimeters of red ribbon to make the "X".
Peter is making an "X marks the spot" flag for a treasure hunt. The flag is made of a square white flag with sides of 12 centimeters. He will make the "X" by stretching red ribbon diagonally from corner to corner.
How many centimeters of ribbon will Peter need to make the "X"?
Round your answer to the nearest centimeter.
1 answer