5.Math – Square Rectangle

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  1. If the radius of a circle is increased by 50%, the perimeter of the circle will increase by
  1. 20%
  2. 30%
  3. 40%
  4. 50%
Answer : (4)
  1. The length of the side of a square (5.0 cm x 5.0 cm) is increased by 1%. By what percentage (%), the area of the square increases?

(1) 1% (2) 2%

(3) 2.5 % (4) 4%

Ans. 2

Q.4 The volume of a cube of side 10.0 cm is changed by increasing its sides by 1.0%. The percentage increase in the volume of the cube is 

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1.~1%                                 2.~ 6%

3.~3%                                  4.~10 %

Ans:3
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