find the area and the perimeter of the shaded regions below. give your answer as a completely simplified exact value in terms of π(no approximations). The figures below are based on semicircle or quarter circles and problems(b),(c),(d) are involving portions of a square:

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Volume of cylinder with a radius of 8cm and height of 25 cm

Select the correct answer. in the figure, angle k measures 45°. what is the measurement of angle c? a. 38° b. 45° c. 90° d. 98°