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jmc

geometry junior

Problem

To promote her school's annual Kite Olympics, Genevieve makes a small kite and a large kite for a bulletin board display. The kites look like the one in the diagram. For her small kite Genevieve draws the kite on a one-inch grid. For the large kite she triples both the height and width of the entire grid.
problem
What is the number of square inches in the area of the small kite?
(A)
(B)
(C)
(D)
Solution
The area of a kite is half the product of its diagonals. The diagonals have lengths of and , so the area is .
Final answer
A