What is a good projector for under 300?

An 10-inch-by-11-inch transparency sheet is placed on an overhead projector. If the projector enlarges 300%,?

• What will be the lengths of the sides of the projection? How does the perimeter of the original transparency sheet compare to the perimeter of the projection?

• Answer:

  300% = 3 times Original perimeter = 2(W + L) = 2(10+11) = 42 inches Enlarged perimeter: 3 x 10" = 30" 3 x 11" = 33" 2(30+33) = 126 inches Answer: Since each linear measurement is enlarged by 300% (3 times), the new perimeter is 3 times as big. Original = 42 inches Enlarged = 3 x 42 = 126 inches