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Q:

The curved surface area and the diameter of a right circular cylinder are 660 sq.cm and 21 cm respectively. Find its height (in cm).

 

A) 9 B)  10
C) 12 D) 8
 
Answer & Explanation Answer: B)  10

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Filed Under: Area
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Q:

ΔPQR is right angled at Q. If m∠R=300, then find the value of (cosP - 1/3).

 

A) 1/6 B)  (2√2-1)/√2
C)  -1/√3 D)  (√3-4)/2√3
 
Answer & Explanation Answer: A) 1/6

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Q:

What is the length of diagonal, if area of a rectangle is 168 sq.cm and breadth is 7 cm?

A) 24 cm B) 15 cm
C) 17 cm D) 25 cm
 
Answer & Explanation Answer: D) 25 cm

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Q:

Calculate the pressure (in Pa) if a thrust of 1000 N is applied to an area of 5 sq.m.

 

A) 200 B) 50
C) 100 D) 25
 
Answer & Explanation Answer: A) 200

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Q:

The area of a rectangle is 448 sq.m. If the length is more than the breadth by 12%, find the breadth.

A) 14 m B) 16 m
C) 18 m D) 20 m
 
Answer & Explanation Answer: D) 20 m

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Q:

What will be the cost of levelling a circular ground of diameter 28 m, if charges are Rs. 125 per sq.m?

A) Rs. 76000 B) Rs. 76400
C) Rs. 76800 D) Rs. 77000
 
Answer & Explanation Answer: D) Rs. 77000

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Q:

Find the surface area (in sq.cm) of a sphere of diameter 14 cm.

 

A) 616   B) 4699  
C) 8628   D) 6922
 
Answer & Explanation Answer: A) 616  

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Filed Under: Volume and Surface Area
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Q:

The area of a circle is 616 sq.cm. Find its radius (in cm).

 

A) 14 B) 28
C) 11 D) 22
 
Answer & Explanation Answer: A) 14

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