Answer:
You could use the Pythagnerum Theorem
Step-by-step explanation:
As there are 81 tiles total, that makes your area 81. Being a square, that makes your area equation A=s^2. As you need a side, this makes your equation s=√A. Plugging in 81 as A, we get s=√81=9, so an edge has 9 tiles.
She cuts off 21 cm. this leaves 63cm. cut into 6 equal pieces gives 10.5 cm pcs
Answer:
4/12 or 1/3
Step-by-step explanation:
