Katrina used 64 inches of ribbon to make a hair bow for her sister. If 2.54 centimeters is equal to 1 inch, how many centimeters of ribbon did Katrina use?

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

What is the area of the shaded sector?