Practicing Success
If the total surface area of a sphere of radius r cm is equal to the total surface area of a cube of side s cm, which of the following is true? |
r > s r ≥ s r = s r < s |
r < s |
We have, Total surface area of a sphere = 4πr2 Total surface area of a cube = 6a2 We have, According to the question, 4πr2 = 6s2 = 44r2 = 21s2 = r2 : s2 = 21 : 44 So the, value of r will be in between 4 and 5 and the Value of s will be between 6 and 7 So, from this we can say r < s |