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1 vote

The areas of two circular fields are in the ratio of 25 : 64 respectively. If the radius of the latter is 16 metre then what is the radius of the former ? (in metre)

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The areas of two circular fields are in the ratio of 25 : 64 respectively. If the radius of the latter is 16 metre then what is the radius of the former ? (in metre)
1). 14
2). 10
3). 6
4). 18


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2 answers

3 vote
Answered by on | Votes 3 |
Solution

Let radius of former circular field = $r$

Acc. to ques,

=> $\frac{\pi r^2}{\pi 16^2} = \frac{25}{64}$

=> $r^2 = \frac{25}{64} \times 16 \times 16$

=> $r^2 = 25 \times 4 = 100$

=> $r = \sqrt{100} = 10$

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3 vote
Answered by on | Votes 3 |
Solution

Let radius of former circular field = $r$

Acc. to ques,

=> $\frac{\pi r^2}{\pi 16^2} = \frac{25}{64}$

=> $r^2 = \frac{25}{64} \times 16 \times 16$

=> $r^2 = 25 \times 4 = 100$

=> $r = \sqrt{100} = 10$




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