solve in matlab code all please

Problem 4 (1 point) Find the cosine of 35 degrees, 2 ways - one way, use the cos () function. Repeat this using the function cosd(). What units does each function require? Problem 5 (1 point) Evaluate the expression 3+125 Problem 6 (1 point) Evaluate the expression 4w122+24 Problem 7 (3 points) A steel ball is dropped from an airplane. An object falling through the Earth's atmosphere encounters airresistance effects. At some point the object may reach terminal velocity. Calculate the terminal velocity of the steel ball if its mass is 0.065471kg and its diameter is 0.025m. Calculate the terminal velocity in units of cm/s. vt=CA(2mg) Vt= terminal velocity m= mass of the falling object g= acceleration due to gravity (9.81m/s/2) p= density of the medium the object is falling through (in this case the medium is air and has a density of 1.225 kg/mn3 ) C= drag coefficient (drag coefficient for a sphere is 0.47 ) A= cross-section area of the object (in this case it is a circle)