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A volleyball court is in a rectangular shape and its dimensions are directly proportional to the dimensions of the swimming pool given below. Find the width of the pool.
asked
Jan 17, 2022
in
8th-maths
marks3
chapter13
#sub
0
votes
0
answers
What is the area of the triangle ADE in the following figure?
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
160 `m^3` of water is to be used to irrigate a rectangular field whose area is 800 `m^2`. What will be the height of the water level in the
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#sub
0
votes
0
answers
The volume of a cube whose edge is 3x
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
Area of a quadrilateral ABCD is 20 `cm^2` and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length of BD
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The side of the cube
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. The edge of the new cube
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
The volume of a cylinder becomes __________ the original volume if its radius becomes half of the original
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
0
votes
0
answers
The perimeter of a rectangle becomes __________ times its original perimeter, if its length and breadth are
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
0
votes
0
answers
The area of a trapezium become 4 times if its height gets
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#tnf
0
votes
0
answers
Find the length of the largest pole that can be placed in a room of dimensions `12 m xx 4 m xx 3 m`. Find the area of the following fields. All dimensions are in
asked
Jan 17, 2022
in
8th-maths
marks2
chapter11
#sub
0
votes
0
answers
A square sheet of paper is converted into a cylinder by rolling it along its side. What is the ratio of the base radius to the side of the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of iron used in the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
A rectangular sheet of dimensions `25 cm xx 7 cm` is rotated about its longer side. Find the volume and the whole surface area of the solid thus
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `8a^3 –
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the expressions and divide them as directed: `(9x^2 – 4) -: (3x +
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Factorise the expressions and divide them as directed: `(x^4 – 16) -: x^3 + 2x^2 + 4x +
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The sum of (x + 5) observations is `x^4 – 625`. Find the mean of the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
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