Maths-
General
Easy

Question

There are two circle with same centre O. The radius of larger circle is 4cm and that of the smaller circle is 2cm.
Find area of the shaded region.


Find area of the shaded region.

  1. 36.5 sq cm
  2. 35.5 sq cm
  3. 37.7 sq cm
  4. 37 sq cm

The correct answer is: 37.7 sq cm


    Ar of shaded region =ar. of larger circle – ar. of smaller circle
    {ar.  of  circle = 22/7*r*r}
    = 22/7*4*4-22/7*2*2
    =22/7(16-4)
    =22/7*12
    =37.7 sq cm

    Book A Free Demo

    +91

    Grade*

    Related Questions to study

    General
    Maths-

    What is 9 divided by 72

    9/72, dividing Numerator and denominator by 9 we get 1/8

    What is 9 divided by 72

    Maths-General
    9/72, dividing Numerator and denominator by 9 we get 1/8
    General
    Maths-

    12 divided by 26

    12/26, dividing Numerator and denominator by 2 we get 6/13

    12 divided by 26

    Maths-General
    12/26, dividing Numerator and denominator by 2 we get 6/13
    General
    Maths-

    Aman bought an bike for Rs. 20,000 and sold it to Raman and earn a profit of 2,000. So, at what amount Aman sold the bike to Raman.

    Cost price= Rs 20,000
    Profit=2,000
    Selling Price=?
    SP=CP+profit
    =20,000+2,000
    =Rs 22,000

    Aman bought an bike for Rs. 20,000 and sold it to Raman and earn a profit of 2,000. So, at what amount Aman sold the bike to Raman.

    Maths-General
    Cost price= Rs 20,000
    Profit=2,000
    Selling Price=?
    SP=CP+profit
    =20,000+2,000
    =Rs 22,000
    General
    Maths-

    Write 24 in roman numerals

    XX= 20 IV = 4 , XXIV = 24

    Write 24 in roman numerals

    Maths-General
    XX= 20 IV = 4 , XXIV = 24
    General
    Maths-

    What value of x satisfies 2x + 3 = 9

    Substituting x = 3, 2x3 + 3 = 6+3 = 9

    What value of x satisfies 2x + 3 = 9

    Maths-General
    Substituting x = 3, 2x3 + 3 = 6+3 = 9
    General
    Maths-

    Two angles  are supplementary and one exceeds the other by 10 degree. Find the angles.

    Let the measure of one angle be x then other angle is x+10.
    As the angles are supplementary
    X+ (x+10)=180
    2x + 10= 180
    2x = 170
    X = 170/2
    X = 85
    Hence, the angles are 85 and 95.

    Two angles  are supplementary and one exceeds the other by 10 degree. Find the angles.

    Maths-General
    Let the measure of one angle be x then other angle is x+10.
    As the angles are supplementary
    X+ (x+10)=180
    2x + 10= 180
    2x = 170
    X = 170/2
    X = 85
    Hence, the angles are 85 and 95.
    General
    Maths-

    1023+356

    1023+356=1379

    1023+356

    Maths-General
    1023+356=1379
    General
    Maths-

    Is 71 prime

    True as 71 as no other factor

    Is 71 prime

    Maths-General
    True as 71 as no other factor
    General
    Maths-

    which multiplication property states that,”The mode of grouping the factors does not change the result of the multiplication”.

    (a*b)*c =a*(b*c)

    which multiplication property states that,”The mode of grouping the factors does not change the result of the multiplication”.

    Maths-General
    (a*b)*c =a*(b*c)
    General
    Maths-

    Write 3.6 as fraction

    3.6 = 36/10, dividing numerator and denominator 2, we get 18/5

    Write 3.6 as fraction

    Maths-General
    3.6 = 36/10, dividing numerator and denominator 2, we get 18/5
    General
    Maths-

    what is the opposite integer of 4:

    opposite integer of 4 is -4

    what is the opposite integer of 4:

    Maths-General
    opposite integer of 4 is -4
    General
    Maths-

    7/3 divided by 1 is

    Any number divided by 1 is the number itself

    7/3 divided by 1 is

    Maths-General
    Any number divided by 1 is the number itself
    General
    Maths-

    What is the area of triangle whole base is 3m and height is 12m

    Area of triangle = ½ bxh = ½ 3 x 12 = 3x 6 = 18 m2

    What is the area of triangle whole base is 3m and height is 12m

    Maths-General
    Area of triangle = ½ bxh = ½ 3 x 12 = 3x 6 = 18 m2
    General
    Maths-

    What is the greatest common factor of 12 and 36

    Factors of 12 = 1,2,3,4,6,12
    Factors of 36= 1,2,3,4,6,12,36
    Greatest common factor = 12

    What is the greatest common factor of 12 and 36

    Maths-General
    Factors of 12 = 1,2,3,4,6,12
    Factors of 36= 1,2,3,4,6,12,36
    Greatest common factor = 12
    General
    Maths-

    Convert 12% into decimals

    12% = 12/ 100 = 0.12

    Convert 12% into decimals

    Maths-General
    12% = 12/ 100 = 0.12