849
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 the circumference of a circle is 44 cm, then what must be its area (in cm²)?

A) 308 B) 240
C) 154 D) 480
 
Answer & Explanation Answer: C) 154

Explanation:
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0 1
Q:

If the lengths of the two parallel sides of a trapezium are 4 cm and 6 cm and its area is 25 cm². Find the distance between its parallel sides (in cm).

A) 2.5 B) 10
C) 5 D) 7.5
 
Answer & Explanation Answer: C) 5

Explanation:
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0 9
Q:

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

 

A) 20 B) 40
C) 100 D) 50
 
Answer & Explanation Answer: A) 20

Explanation:
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0 16
Q:

For the figure given below, find the angle OAB (in degrees).

 

A) 25 B) 50
C) 75 D) 90
 
Answer & Explanation Answer: C) 75

Explanation:
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0 27
Q:

The area of the square field is 196 sq.m. Its each side is

A) 16 m B) 17 m
C) 14 m D) 13 m
 
Answer & Explanation Answer: C) 14 m

Explanation:
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0 36
Q:

What is the area of the square, if the length of its diagonal is 13√2 units?

A) 104 sq.units B) 169 sq.units
C) 338 sq.units D) 676 sq.units
 
Answer & Explanation Answer: B) 169 sq.units

Explanation:
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0 50
Q:

The diagonal of a rhombus is 8m and 6m respectively. Find its area.

A) 48 sq.m B) 24 sq.m
C) 12 sq.m D) 96 sq.m
 
Answer & Explanation Answer: B) 24 sq.m

Explanation:
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0 51
Q:

The perimeter of a triangle is 28 cm. If the length is 5/2 times its breadth, find the length and breadth of the triangle.

A) 9 & 5 B) 10 & 4
C) 6 & 7 D) 11 & 3
 
Answer & Explanation Answer: B) 10 & 4

Explanation:
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