Question: A mason is building a semielliptical fireplace arch that has a height of 2 feet at the center and a width of 6 feet along

A mason is building a semielliptical fireplace arch that has a height of 2 feet at the center and a width of 6 feet along the base (see figure). The mason draws the semi ellipse on the wall by the method shown in Figure 4.22 on page 330. Find the positions of the thumbtacks and the length of the string.

y + -3 -2 -1 3 2.

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