Rearrange c=5a^2-b to make a the subject

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120

Nour and rana are shopping for a christmas tree. they are deciding between 2 22 different types of trees (real and fake) and 4 44 colors for the ornaments (white, silver, gold, and purple). they each created a display to represent the sample space of randomly picking a type of tree and a color for the ornaments. whose display correctly represents the sample space?

These dots plots show the height (in feet) from a sample of the different types of elephants