Change in volume 1/2 points (graded) A ball is supposed to be manufactured with radius 10cm. If it gets made with a radius of 9.97cm instead, it would take up approximately how much less volume (in cubic centimeters)? Do not use a calculator. (The volume of a ball is 47 /3, where r is the radius. Keep your answer in terms of 7 by typing pi and keep your answer as a positive number. Type * for multiplication, / for division, and A for exponents. Do not use a calculator.) 12*pi cm 12 . TT What is the percentage decrease? %Going backwards! 1 point possible [graded] Suppose instead we told you that the sphere was manufactured with an excess volume of 207? cubic centimeters. In centimeters, approximately what radius would you expect this sphere to have? [Do not use a calculator. Enter answer to 2 decimal places.) CITI Big clock 1 point possible (graded) The minute hand extends 14 feet out from the center of the clock face on Elizabeth Tower. It is pointed at the first minute mark of the clock at 7:01. Photo by John Morgan on Fiickr, CC BY Use linear approximation to estimate how much its tip of the minute hand moves horizontally between 7:01 and 7:02. Do not use a calculator. (Hint: approximate from the position of the minute hand at 7:00.] (Please enter your expression in terms of 71'. Type pi for 71'. Type a: for multiplication. Type ,1 for division. Type /\\ for exponents.) feet