12-12-2016
Mathematics

Answered

The volume of a sphere is 80pi cm3. What its is surface area to the nearest whole number

Verified Answer :

Aliwohaish12 Aliwohaish12

12-12-2016

Volume = (4/3) PI radius^3
80 PI = (4/3) PI radius^3
The 'PI's' cancel out leaving
80 = (4/3) radius^3
radius^3 = 80/(4/3)
radius^3 = 60

radius = cube root (60)

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