SOLUTION: Pat is sewing a rectangular tablecloth for her dinning room table. The tablecloth measures 90cm by 180cm. She wants to sew a piece of decorative trim along both diagonals of the ta

Algebra ->  Pythagorean-theorem -> SOLUTION: Pat is sewing a rectangular tablecloth for her dinning room table. The tablecloth measures 90cm by 180cm. She wants to sew a piece of decorative trim along both diagonals of the ta      Log On


   



Question 181162: Pat is sewing a rectangular tablecloth for her dinning room table. The tablecloth measures 90cm by 180cm. She wants to sew a piece of decorative trim along both diagonals of the tablecloth. How much trim will she need?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
90%5E2%2B180%5E2=c%5E2 where c is one diagonal
:
c%5E2=40500
:
c=201.25%29cm
:
201.25*2=402.5 cm of decorative material will be needed