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Mathematics 9 Online
OpenStudy (gabbyalicorn):

What is the exact volume of the sphere? A. 2481.156 cm3 B. 7263.39 cm3 C. 7790.83 cm3 D. 22807.05 cm3

OpenStudy (gabbyalicorn):

rishavraj (rishavraj):

volume of sphere = \[\frac{ 4 }{ 3 } \pi r^3 \]

rishavraj (rishavraj):

r = 12.3 cm.....

OpenStudy (gabbyalicorn):

so pi x 12.3?

rishavraj (rishavraj):

(4/3)pi x (12.3)^3

OpenStudy (gabbyalicorn):

how do we multiply with a fraction?

rishavraj (rishavraj):

\[\frac{ 4 }{ 3 } \times \pi \times (12.3)^3\] \[\frac{ 4 }{ 3 } \times 3.14 \times 1860.867\] proceed

OpenStudy (gabbyalicorn):

5843.12238

rishavraj (rishavraj):

now \[\frac{ 5843.122 \times 4 }{ 3 }\]

OpenStudy (gabbyalicorn):

7790.82984

OpenStudy (gabbyalicorn):

:O

OpenStudy (gabbyalicorn):

C! :D

OpenStudy (gabbyalicorn):

Right? :3

rishavraj (rishavraj):

approx 7790.83 cm^3

OpenStudy (gabbyalicorn):

:D Thank chu! <3 :3

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