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The surface area of a cuboid formed by joining two cubes of side a face to face is

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

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A cuboidal tin box opened at the top has dimensions `20 cm xx 16 cm xx 14 cm`. What is the total area of metal sheet required to make 10 such

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

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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 by Simran (1.8k points)

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Perform the following divisions: `(x^3y^3 + x^2y^3 – xy^4 + xy) -:

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

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Very small numbers can be expressed in standard form using positive

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

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The distance between the Sun and the Earth is `1.496 xx 10^8` km and distance between the Earth and the Moon is `3.84 xx 10^8` m. During solar eclipse the Moon comes in between the Earth and the Sun. What is distance between the Moon and the Sun at that particular

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

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When the interest is compounded half yearly, the number of conversion periods in a year is

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

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After allowing a discount of 15% on the marked price of an article, it is sold for Rs 680. The marked price of the article is Rs

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

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An average urban Indian uses about 150 litres of water every day. Activity Litres per person per day. Drinking 3 Cooking 4 Bathing 20 Sanitation 40 Washing clothes 40 Washing utensils 20 Gardening 23 _______________ Total 150 ________________ (a) What per cent of water is used for bathing and sanitation together per day? (b) How much less per cent of water is used for cooking in comparison to that used for bathing? (c) What per cent of water is used for drinking, cooking and gardening

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

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In 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000. Find the per cent increase in the consumption of water from 1975 to 2000. Also, find the annual per cent increase in consumption (assuming water consumption increases

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

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In which of the following case, do the quantities vary directly with each

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

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A double bar graph is useful for the __________ of two sets of data.- Data represented in a circular form is called a _________ chart.- The graph of a linear equation is always a __________ line.- The cartesian system used two axes which are __________ to each

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

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The graph given below compares the sales of ice creams of two vendorsfor a week.Observe the graph and answer the following questions. (a)On which day did the sale of vendor A increase the most as compared to the previous day?(b) On which day was the difference in sales the

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

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Extend the line segment on both sides to meet the coordinate axes. What are the coordinates of the points where this line meets the x -axis and the

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

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In the coordinates of a point, the second number denotes the

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

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Find the number of digits in the square root of each of the following numbers (without any calculation). 4489

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

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Find the square root of the following decimal numbers. 2.56

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

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Find the least number which must be added to each of the following numbers so as to get a perfect square. Also find the square root of the perfect square so obtained. 525

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

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