The formula for finding the volume of a cone is V = 1/3πr2h. The volume of a cone is 300 cm3 and the height of the cone is 10 cm . What is the approximate radius of the cone? A) 3 cm
B) 5 cm
C) 9 cm
D) 28 cm
2 answers:
If we solve for radius V=1/3pir^2h divide both sides by pih V/(pih)=1/3r^2 times 3 both sides 3V/(pih)=r^2 sqrt both sides sqrt(3v/(pih))=r so if h=10 v=300 then sqrt(3*300/(pi*10))=r sqrt(900/10pi)=r sqrt(90/pi)=r use calculator 5.35=r about 5 B is answer
The answer is b) 5 hope I helped!
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