what is the best example of surface area and volume in our daily life

Asked by sanjeev.mami | 11th Oct, 2015, 05:17: PM

Expert Answer:

S u p p o s e space w e space w a n t space t o space p a i n t space a space s p h e r i c a l space b a l l. space H e r e comma space t h e space t o t a l space a r e a space t o space b e space p a i n t e d space i s space e q u a l space t o space t h e space s u r f a c e space a r e a space o f space t h e space b a l l. T h e space s u r f a c e space a r e a space o f space a space s p h e r e space i s space 4 πr squared comma space where space apostrophe straight r apostrophe space is space the space radius. So comma space if space the space cost space of space painting space is space straight K space per space square space unit comma space then space the space toal space cost space of space painting space is straight K cross times space 4 πr squared  Let space straight a space cylinderical space tank space is space being space filled space with space straight a space water space flow space by space straight a space pipe space at space straight a space rate space of space straight T space cubic space unit space per space sec. The space total space volume space of space straight a space cylinderical space tank space with space base space radius space straight R space and space height space straight H space is space given space by space πR squared straight H. Hence comma space the space total space time space taken space to space fill space the space tank space is space fraction numerator πR squared straight H over denominator straight T end fraction space secs. space

Answered by satyajit samal | 12th Oct, 2015, 10:50: AM