Subject :IMO Class : Class 7
Subject :IMO Class : Class 3
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Subject :IMO Class : Class 4
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 4
Ans 3:
Class : Class 6
If large square = A
small square =B
cylinder=C
then,
A+B=70gm
10A+10B=700gm
10C=3200gm-700gm
=2500gm
C=2500/10
=250
Ans 5:
Class : Class 8
250 GRAMS .
FIRST DIVIDE 3200 BY 10 . ANS =320
THEN SUBTRACT 70 FROM 320. ANS =250
WEIGHT OF THE CYLINDER =250
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Subject :IMO Class : Class 3
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Subject :IMO Class : Class 3
Ans 4:
Class : Class 10
Longer side of the rectangle paper = 7 + 6 + 4 + 4 + 4 = 25 cm
Smaller side of the rectangle paper = 4 cm
Total length (perimeter) = 25 + 25 + 4 + 4 = 58 cm
Smaller side of the rectangle paper = 4 cm
Total length (perimeter) = 25 + 25 + 4 + 4 = 58 cm
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Subject :IMO Class : Class 8
Ans 1:
Class : Class 9
(a^2-b^2)/ab - (ab-b^2)/(ab- a^2)
#Using special product
= (a+b)(a-b)/ab - (ab-b^2)/(ab- a^2)
#Removing out a and b common
= (a+b)(a-b)/ab - b(a-b)/a(b-a)
#LCM of both denominators i.e. ab and a(b-a) is ab(b-a)
#Hence we multiply first equation by (b-a) and second equation by b
= (a+b)(a-b)(b-a)/ab(b-a) - b^2(a-b)/ab(b-a)
#Taking the denominator common
= [(a+b)(a-b)(b-a) - b^2(a-b)]/ab(b-a)
#Taking (b-a) common in the numerator
=[(b-a)(a^2-b^2-b^2)]/ab(b-a)
#Cancelling out (b-a) from numerator and denominator
=a^2 - 2 b^2 / ab
Hence B is the answer.
Ans 3:
Class : Class 9
(a^2-b^2)/ab - (ab-b^2)/(ab- a^2)
#Using special product
= (a+b)(a-b)/ab - (ab-b^2)/(ab- a^2)
#Removing out a and b common
= (a+b)(a-b)/ab - b(a-b)/a(b-a)
#LCM of both denominators i.e. ab and a(b-a) is ab(b-a)
#Hence we multiply first equation by (b-a) and second equation by b
= (a+b)(a-b)(b-a)/ab(b-a) - b^2(a-b)/ab(b-a)
#Taking the denominator common
= [(a+b)(a-b)(b-a) - b^2(a-b)]/ab(b-a)
#Taking (b-a) common in the numerator
=[(b-a)(a^2-b^2-b^2)]/ab(b-a)
#Cancelling out (b-a) from numerator and denominator
=a^2 - 2 b^2 / ab
Hence B is the answer.
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Subject :IMO Class : Class 3
Ans 1:
Class : Class 7
the area of square paper sheet without cutting corners is Breadth x lenght = 12 x 12 = 144, now the area of the cut rectangle is breadth x length = 3 x 2 = 6, and there are four corners cutted. therefore 6 x 4 =24, now minus the cut corners area from total area. so 144-24 =120. therefore the answer is B
Ans 2:
Class : Class 10
Area of original square paper sheet = 12 x12 = 144cm2
Area of 1 rectangle cut = 3 x 2 = 6 cm2
Area of 4 such rectangles - 6 x 4 = 24 cm2
Area of paper left = 144 - 24 = 120 cm2
Area of 1 rectangle cut = 3 x 2 = 6 cm2
Area of 4 such rectangles - 6 x 4 = 24 cm2
Area of paper left = 144 - 24 = 120 cm2
Ans 4:
Class : Class 6
Its was a square 12X12=144sq cm. cut part area= 2x3=6 sq cm. total cut area = 6x4= 24 sq cm.
Area of remaining sheet = 144-24 = 120. so, B is the answer.
Ans 5:
Class : Class 5
Total area of the square=12 x 12 = 144 cm2
Area of one rectangle cut = 3 x 2 = 6 cm2
Area of 4 rectangles cut = 4 x 6 = 24 cm3
Area of the square after cutting = 144 - 24 = 120 cm2
Ans 6:
Class : Class 3
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Ans 7:
Class : Class 4
Answer: (B)
Area of square = 12*12 = 144 sq cm
Area of 1 rectangle cut = 3*2 = 6 sq cm
Area of 4 rectangles cut = 4*6 = 24 sq cm
Area of remaining paper = 144 - 24 = 120 sq cm
Ans 8:
Class : Class 10
Answer: B
Solution
Area of original square paper sheet = 12 x12 = 144cm2
Area of 1 rectangle cut = 3 x 2 = 6 cm2
Area of 4 such rectangles - 6 x 4 = 24 cm2
Area of paper left = 144 - 24 = 120 cm2
Solution
Area of original square paper sheet = 12 x12 = 144cm2
Area of 1 rectangle cut = 3 x 2 = 6 cm2
Area of 4 such rectangles - 6 x 4 = 24 cm2
Area of paper left = 144 - 24 = 120 cm2