As helium is added to a balloon, the balloon always keeps a spherical shape. If helium is added at the rate of 120x cubic inches per minute, how fast is the radius growing at the
moment when radius is 10 inches.

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet