Find the surface area of a sphere whose volume is 99/7 cm3
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Answered by
45
volume of sphere=4/3*pi*r^3---(1)
given volume =99/7 cm^3----(2)
(1)=(2)
4/3*22/7*r^3= 99/7 cm^3
r^3=(99*3*7)/(7*4*22)
r^3=(3/2)^3
r==3/2 cm
surface area of sphere=4*pi*r^2
= 4*22/7*3/2*3/2
=22*3*3/7
=198/7 cm^2
given volume =99/7 cm^3----(2)
(1)=(2)
4/3*22/7*r^3= 99/7 cm^3
r^3=(99*3*7)/(7*4*22)
r^3=(3/2)^3
r==3/2 cm
surface area of sphere=4*pi*r^2
= 4*22/7*3/2*3/2
=22*3*3/7
=198/7 cm^2
Answered by
5
Answer:
radius is 1.5 and surface area is 198/7^2
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