919
Q:

If each side of a square is increased by 25%, find the percentage change in its area?

A) 65.25 B) 56.25
C) 65 D) 56

Answer:   B) 56.25



Explanation:

let each side of the square be a , then area = a2 

As given that The side is increased by 25%, then 

New side = 125a/100 = 5a/4 

 

New area = 5a42  

 

Increased area= 25a216-a2 

 

Increase %=9a2/16a2*100  % = 56.25%

Q:

If tangents PA and PB from a point P to a circle with centre O are inclined to each other at an angle of 110 deg then the angle POA is

A) 50 deg B) 70 deg
C) 35 deg D) 45 deg
 
Answer & Explanation Answer: C) 35 deg

Explanation:
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0 48
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

Explanation:
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1 69
Q:

A path of 2.5 m width surrounds a rectangular garden of length 10 m and breadth 8 m. Area of the garden, inclusive of the path is

A) 130.25 sq.m B) 131.25 sq.m
C) 195.00 sq.m D) 162.50 sq.m
 
Answer & Explanation Answer: C) 195.00 sq.m

Explanation:
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1 75
Q:

Find the odd statement : Two lines are perpendicular to each other if they are,

 

A) Adjacent sides of a rectangle B) Diagonals of a rhombus
C) Hypotenuse and one side of a right-angle triangle D) Adjacent sides of a square
 
Answer & Explanation Answer: C) Hypotenuse and one side of a right-angle triangle

Explanation:
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0 48
Q:

In ΔPQR measure of angle Q is 90 deg. If cotP = 8/15, and PQ = 4cm, then what is the length (in cm) of side PR?

 

A) 8.5   B) 7.5  
C) 5   D) 4
 
Answer & Explanation Answer: A) 8.5  

Explanation:
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0 97
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

Explanation:
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0 75
Q:

The perimeter of a square is 26 cm. Find its area (in cm2).

 

A) 42.25   B) 84.5  
C) 39.25   D) 78.5
 
Answer & Explanation Answer: A) 42.25  

Explanation:
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0 64
Q:

Classify the triangle as a type of triangle if the sides of the triangle are 6, 12 and 13 units.

 

A) Right angled triangle B) Obtuse angled triangle
C) Acute angled triangle D) None of these
 
Answer & Explanation Answer: C) Acute angled triangle

Explanation:
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0 92