The diameter of a sphere is 8 cm. Which could be a possible length for the radius of a cross section of the sphere? Check all that apply.
2 cm
3 cm
4 cm
5 cm
6 cm

Eiko is wearing a magic ring that increases the power of her healing spell by 30%30\%30%30, percent. without the ring, her healing spell restores health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?