Each side of a square is increasing at a rate of 5 cm/s. at what rate is the area of the square increasing when the area of the square is 81 cm2? cm2/s

When y’all answer can y’all explain too !

Someone me i need with this stuff

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.