If the ratio of diameters of two sphere is 3:4. Find the ratio of their surface area
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Ratio of diameters = 3:4
Let the diameters be 3x, 4x. Radi = 3x/2 , 2x
ATP,
SA for first sphere = 4π(3x/2)² = 9πx²
SA for second sphere = 4π(2x)² = 16πx²
Ratio = 9:16
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