878
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:

Five angles of a hexagon measure 116 deg each. What is the measure of the remaining angle?

A) 152 deg B) 116 deg
C) 140 deg D) 126 deg
 
Answer & Explanation Answer: C) 140 deg

Explanation:
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0 22
Q:

A right-angled triangle ABC is right-angled at B, and tan A = 4/3. If AC = 25 cm, the length of BC is

A) 33.3 cm B) 24 cm
C) 20 cm D) 18.75 cm
 
Answer & Explanation Answer: C) 20 cm

Explanation:
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0 22
Q:

The circumference of a circle is 110 cm. Find its radius (in cm).

A) 35 B) 19.5
C) 17.5 D) 39
 
Answer & Explanation Answer: C) 17.5

Explanation:
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0 29
Q:

The area of a square is 30.25 cm². Find its perimeter (in cm).

 

A) 44 B) 23
C) 22 D) 46
 
Answer & Explanation Answer: C) 22

Explanation:
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0 22
Q:

If the angles of a triangle are in the ratio of 2 : 5 : 8, then find the value of the largest angle.

A) 36 deg B) 96 deg
C) 84 deg D) 60 deg
 
Answer & Explanation Answer: B) 96 deg

Explanation:
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0 51
Q:

If two complimentary angles are in the ratio of 11 : 7, find the smaller angle.

A) 35 deg B) 55 deg
C) 45 deg D) 25 deg
 
Answer & Explanation Answer: A) 35 deg

Explanation:
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0 59
Q:

Find the length of one side of a rhombus whose area is 24 sq.cm and the sum of the lengths of its diagonals is 14 cm.

A) 3 cm B) 6 cm
C) 4 cm D) 5 cm
 
Answer & Explanation Answer: D) 5 cm

Explanation:
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1 78
Q:

The volume of a cube is 274.625 cm³. Find its side (in cm).

 

A) 7.5 B) 6.5
C) 5.5 D) 3.5
 
Answer & Explanation Answer: B) 6.5

Explanation:
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0 432