Watermelon slices and outdoor barbecues go together like peanut butter and jelly, with the juicy, sweet fruit perfectly contrasting warm, savory meat. But the spherical nature of it already makes ...

So for a spheroid watermelon of length 10 cm, for two slices, the first slice should be made at 3.5 cm along the length but for three slices, the first slice should be 2.1 cm and the second 4.2 cm.