21 ounce box of Cheerios for 5.69 is worth it.
For the 17-ounce box of special k, the price per ounce is
4.89/17 = $0.29
For the 21 ounce box of cheerios, the price per ounce is
5.69/21 = $0.27
The box of cheerios is a lower price per ounce and the better deal.
Regarding the anatomy of an arch, what is the springing line? The springing line is an imaginary line between where the curves of the arch begin on each side