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From the following table, determine if x and y are in direct proportion or not. x 3 6 15 20 30 y 12 24 45 60 120
asked
Jan 17, 2022
in
8th-maths
marks2
chapter13
#sub
0
votes
0
answers
A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3`
asked
Jan 17, 2022
in
8th-maths
marks2
chapter13
#sub
0
votes
0
answers
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In each of the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them. If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue
asked
Jan 17, 2022
in
8th-maths
marks3
chapter13
#sub
0
votes
0
answers
Pattern B consists of four tiles like pattern A. Write a proportion involving red dots and blue dots in pattern A and B. Are they in direct proportion? If yes, write the constant of proportion.
asked
Jan 17, 2022
in
8th-maths
marks3
chapter13
#sub
0
votes
0
answers
How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
If the diagonals of a rhombus get doubled, then the area of the rhombus becomes __________ its original
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
0
votes
0
answers
Total surface area of a cylinder of radius h and height r is
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
0
votes
0
answers
__________ of a solid is the measurement of the space occupied by
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
0
votes
0
answers
The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are 4.5 m, 3 m, and 350 cm respectively. Find the cost of plastering at the rate of Rs 8 per
asked
Jan 17, 2022
in
8th-maths
marks2
chapter11
#sub
0
votes
0
answers
Most of the sailboats have two sails, the jib and the mainsail. Assume that the sails are triangles. Find the total area of each sail of the sail boats to the nearest tenth.
asked
Jan 17, 2022
in
8th-maths
marks2
chapter11
#sub
0
votes
0
answers
There is a circular pond and a footpath runs along its boundary. A person walks around it, exactly once keeping close to the edge. If his step is 66 cm long and he takes exactly 400 steps to go around the pond, find the diameter of the
asked
Jan 17, 2022
in
8th-maths
marks2
chapter11
#sub
0
votes
0
answers
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
The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per
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
External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per d`m^2` is Rs 11,750, find the dimensions of the
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1
asked
Jan 17, 2022
in
8th-maths
marks3
chapter11
#sub
0
votes
0
answers
The y coordinate of any point lying on the x axis will be
asked
Jan 17, 2022
in
8th-maths
marks1
chapter12
#tnf
0
votes
0
answers
The given graphs show the progress of two different cyclists during a ride. For each graph, describe the rider’s progress over the period of
asked
Jan 17, 2022
in
8th-maths
marks1
chapter12
#sub
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