c3rimaallzhannon c3rimaallzhannon

21-07-2016
Mathematics

Answered

The area of a circular sun spot is growing at a rate of 600 km2/sec.

AHow fast is the radius growing at the instant when it equals 4,000 km?

Verified Answer :

Peehu08 Peehu08

21-07-2016

14 sec because
In 2sec=600
In4 sec=1200
In6 sec =1800
In 8sec =2400
In10 sec=3000
In12sec=3600
In 14sec=4000
In 14seconds it covers 4000

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