3U in a trend that scientists attribute, at least in part. to global warming, a certain oating cap ef'sea ice has been shrinking since 1980. The ice cap always shrinks in the summer and grows in winter. Average ~21 co minimum size of the ice cap, in square miles, can be approximated by A = m2. In 2013, the radius of the ' ice cap was approximately 786 mi and was shrinking at a rate of agproximately 4.3 mi / yr. How fast was ' the area changing at that time? The area was changing at a rate of [:1 in 2013. (Round to the nearest integer as needer K Get more help A