What is the first equation?
Remember perpendicular lines have reciprocal slopes.
So if we have 1/2 we flip to fraction and sign becoming -2.
You then input the point to find the y-intercept.
Uh sure what type of cereal?
Well, split it into 3 shapes
21 x 10 = 210
3 x 6 = 18
2 x 6 = 12
210 + 18 + 12 = 240 square cm
imahe for more context
plzzz give me brainliest