A cow is tied to a peg using a rope which is 10m long at the center of the garden. What is the maximum area the cow can graze on

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Can someone me with these two circle theorem questions asap?