Sawaal
19
Q:

A circular swimming pool is surrounded by a concrete wall 4ft wide. If the area of the concrete wall surrounding the pool is 11/25 that of the pool, then the radius of the pool is?

A) 10ft B) 20ft
C) 30ft D) 40ft

Answer:   B) 20ft



Explanation:

let the radius of the pool be Rft

 

Radius of the pool including the wall = (R+4)ft

 

Area of the concrete wall = πR+42-R2=πR+4+RR+4-R = 8πR+2 sq feet

 

=> 8πR+2 = 1125πR2 =>11R2 =200R+2

 

Radius of the pool R = 20ft

Subject: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
Job Role: Bank PO
Related Questions
Q:

The lengths of the diagonals of a rhombus are 16 cm and 12 cm. Its area is:

 

A) 48 cm2 B) 28 cm2
C) 69 cm2 D) 96 cm2
 
Answer & Explanation Answer: D) 96 cm2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

4 7868
Q:

In a triangle, if the measures of two sides are 5 cm and 8 cm, then the third side can be:

 

 

 

A) 3 cm B) 14 cm
C) 2 cm D) 4 cm
 
Answer & Explanation Answer: D) 4 cm

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

2 3593
Q:

In the given figure, if AB=8Cm, AC=10Cm, ∠ABD=90° and AD=17Cm, then the measure of CD is

 

 

A) 8 cm B) 9 cm
C) 11 cm D) 10 cm
 
Answer & Explanation Answer: B) 9 cm

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

2 1233
Q:

In the given figure, ∠APO=35° if then which of the following options is correct?

 

 

A) ∠APB = 60° B)  ∠APB = 80°
C)  ∠APB = 35° D) ∠APB = 55°
 
Answer & Explanation Answer: C)  ∠APB = 35°

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

1 6686
Q:

The area of a semicircle is 77 sq.cm. Calculate its perimeter (in cm)

 

A) 72 B) 49
C) 98 D) 36
 
Answer & Explanation Answer: D) 36

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

0 4390
Q:

The length of the diagonal and the breadth of a rectangle is 25 cm and 7 cm respectively. Calculate its area (in sq.cm)

 

A) 336 B) 168
C) 240 D) 480
 
Answer & Explanation Answer: B) 168

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

0 532
Q:

The area of an equilateral triangle is 18√3 sq.units. Find the value of side (in units) of the triangle.

 

A) √2 B) 2√2
C) 3√2 D) 6√2
 
Answer & Explanation Answer: D) 6√2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

1 521
Q:

An arc length of 16π units subtends an angle of 240 degrees. Find the radius 9in units) of the circle.

 

 

A) 6 B) 12
C) 24 D) 36
 
Answer & Explanation Answer: B) 12

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Area - Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

2 527