Equation for 40,20,10 geometric equation?

Which of the following is the true for f(x) = 5cos

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom