Larger sphere

The volume of the sphere is 20% larger than the volume of the cone. Find its surface if the volume of the cone is 320 cm3.

Correct answer:

S =  255.4886 cm2

Step-by-step explanation:

V1=320 cm3 q=100%+20%=1+10020=1.2  V2=q V1=1.2 320=384 cm3  V2 = 34 π r3  r=34π3 V2=34 3.14163 3844.509 cm  S=4π r2=4 3.1416 4.5092=255.4886 cm2



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You need to know the following knowledge to solve this word math problem:

algebraarithmeticsolid geometryplanimetricsbasic operations and conceptsUnits of physical quantitiesGrade of the word problem

 
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