How do i work out the radius of a sphere by knowing its surface area
in this case the surface area is 4536.46
Thank you for the opportunity to help you with your question!
surface area=4 x pie x r^2
where r= radius, pie=3.14
4 x pie x r^2=4536.46, divide everything by (4x3.14), and get;
r^2=361.183, then get the square root of this number
thu the radius, r=19.005 units
thanks how about if it was a cone and i needed to find the slant height and the height using the surface area which is 320.44 m^2 and a base radius of 6m
welcome. Ok, that is very simple. Am giving the solution in a minute.
surface area of a cone=[pie x r+(sqrth^2+r^2)]
320.44/(3.14x6)=6+sqrt(h^2 + 36)
so using the right angled triangle identity, we get the slant height=11m
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