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A circular swimming pool is surrounded by concrete wall 4ft. If the area of the concrete wall surrounding the pool is  that of the pool, then the radius of the pool is   

(a)

8 ft

(b)

16 ft

(c)

20 ft

(d)

30 ft


Question ID - 50604 | Toppr Answer

A circular swimming pool is surrounded by concrete wall 4ft. If the area of the concrete wall surrounding the pool is  that of the pool, then the radius of the pool is   

(a)

8 ft

(b)

16 ft

(c)

20 ft

(d)

30 ft

1 Answer - 5876 Votes

3537

Answer Key : (c) -

Let the radius of the pool be R ft.

Radius of the pool including the wall =

 

Area of the concrete wall =  =  ft.

 



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