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asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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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 by yogita (1.8k points)

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If y be the reciprocal of rational number x, then the reciprocal of y will

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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The reciprocal of a positive rational number is

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Verify the property `x xx (y + z) = x xx y + x xx z` of rational numbers by taking. x = `(-1)/5`, y = `2/15` and z =

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Solve the equation for y

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 10500 `m^2` and the perpendicular distance between the two parallel sides is 100 m, find the length of the side along the

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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In the time table of a school, periods allotted per week to different teaching subjects are given below: Subject Hindi English Maths Science Social Science Computer Sanskrit Periods Allotted 7 8 8 8 7 4 3 Draw a pie chart for this

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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A survey was made to find the type of music that a certain group of young people liked in a city.Adjoining pie chart shows the findings of this survey.From this pie chart answer the following:

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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Write any 5 rational numbers between `-5/6` and `7/8`

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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Repeater Machine Similarly, repeater machine is a hypothetical machine which automatically enlarges items several times. For example, sending a piece of wire through a `(xx 2^4)` machine is the same as putting it through a (xx 2) machine four times. So, if you send a 3 cm piece of wire through a `(xx 2^4)` machine, its length becomes `3 xx 2 xx 2 xx 2 xx 2 = 48` cm. It can also be written that a base (2) machine is being applied 4 times. What will be the new length of a 4 cm strip inserted in

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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There is a regular hexagon MNOPQR of side 5 cm .Aman and Ridhima divided it in two different

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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Draw a histogram for the frequency table made for the data in Question 3, and answer the following questions. The weekly wages (in Rs) of 30 workers in a factory are. 830, 835, 890, 810, 835, 836, 869, 845, 898, 890, 820, 860, 832, 833, 855, 845,

asked Jan 17, 2022 in 8th-maths by sumit (1.6k points)

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0.25(4f – 3) = 0.05(10f –

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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The overall width in cm of several wide-screen televisions are 97.28 cm,`98 4/9`cm,`98 1/25` cm and 97.94 cm. Express these numbers as rational numbers in the form `p/q` and arrange the widths in ascending

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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A pie chart is also called a

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Ram put some buttons on the table. There were 4 blue, 7 red, 3 black and 6 white buttons in all. All of a sudden, a cat jumped on the table and knocked out one button on the floor. What is the probability that the button on the floor is

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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Find the cube root of each of the following numbers by prime factorisation method. 512

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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