The diameter of two silver discs are in the ratio 2:3. What will be the ratio of their areas
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Answered by
53
Given,
Ratio of the diameters = 2:3
Let the diameters be 2x and 3x
So, radii of the discs = 2x/2 and 3x/2
= x and 3x/2
Ratio of the area of the discs = πx² / π(3x/2)²
= πx² / π(3x/2)²
= 4x² / 9x²
= 4 / 9
= 4 : 9 Ans.
Ans.) The ratio of the areas of two silver discs will be 4 : 9.
Ratio of the diameters = 2:3
Let the diameters be 2x and 3x
So, radii of the discs = 2x/2 and 3x/2
= x and 3x/2
Ratio of the area of the discs = πx² / π(3x/2)²
= πx² / π(3x/2)²
= 4x² / 9x²
= 4 / 9
= 4 : 9 Ans.
Ans.) The ratio of the areas of two silver discs will be 4 : 9.
Answered by
31
Answer: 4 : 9
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