Volume of a hemisphere is 19404cm ^3 find Tsa of hemisphere
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Answered by
2
let the radius of the hemisphere = r cm
volume of the hemisphere = 2/3 *πr³
2/3*22/7*r³=19404
r³=(19404*3*7)/(2*22)
r³=(21)³
r= 21 cm
============
i)tsa = 3πr²
= 3*22/7 * 21*21
=4158 cm²
volume of the hemisphere = 2/3 *πr³
2/3*22/7*r³=19404
r³=(19404*3*7)/(2*22)
r³=(21)³
r= 21 cm
============
i)tsa = 3πr²
= 3*22/7 * 21*21
=4158 cm²
Answered by
1
19404 = 2/3πr³ (vol of hemisphere)
19404*3/2 = 22/7 r³
9702*3 *7 /22. =r³
441*3*7=r³
r= 21 cm
TSA of hemisphere = 3πr²
=3 * 22/7 *21*21
=4158cm²
19404*3/2 = 22/7 r³
9702*3 *7 /22. =r³
441*3*7=r³
r= 21 cm
TSA of hemisphere = 3πr²
=3 * 22/7 *21*21
=4158cm²
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