Questions by Arun

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Look at the given map of a city. Answer the following.-(a) Colour the map as follows: Blue-water, red-fire station, orange-library, yellow - schools, Green - park, Pink - College, Purple - Hospital, Brown - Cemetery.-(b) Mark a green ‘X’ at the intersection of Road ‘C’ and Nehru Road, Green ‘Y’ at the intersection of Gandhi Road and Road A.-(c) In red, draw a short street route from Library to the bus depot.-(d) Which is further east, the city park or the market?-(e) Which is further south, the primary school or the Sr. Secondary

asked Jan 18, 2022 in 8th-maths

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Is it possible to have a polyhedron with any given number of faces? (Hint: Think of a

asked Jan 18, 2022 in 8th-maths

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(i) How are prisms and cylinders

asked Jan 18, 2022 in 8th-maths

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Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth and height of 15 m, 10 m and 7 m respectively. From each can of paint 100 `m^2` of area is painted. How many cans of paint will she need to paint the

asked Jan 18, 2022 in 8th-maths

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A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface ofthe container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the

asked Jan 18, 2022 in 8th-maths

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A cuboid is of dimensions 60 cm × 54 cm × 30 cm. How many small cubes with side 6 cm can be placed in the given

asked Jan 18, 2022 in 8th-maths

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If each edge of a cube is doubled, how many times will its surface area

asked Jan 18, 2022 in 8th-maths

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Simplify `2^5 ÷ 2^(– 6)`

asked Jan 18, 2022 in 8th-maths

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Simplify and write the answer in the exponential form. `(– 4)^(– 3) xx (5)^(– 3) xx

asked Jan 18, 2022 in 8th-maths

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Simplify and express the result in power notation with positive exponent. `(3^(– 7) ÷ 3^(– 10)) xx 3^(– 5)`

asked Jan 18, 2022 in 8th-maths

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Evaluate

asked Jan 18, 2022 in 8th-maths

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Express the following numbers in standard form.

asked Jan 18, 2022 in 8th-maths

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The cost of 5 metres of a particular quality of cloth is Rs 210. Tabulate the cost of 2, 4, 10 and 13 metres of cloth of the same

asked Jan 18, 2022 in 8th-maths

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If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh `2 1/2`

asked Jan 18, 2022 in 8th-maths

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Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him bycompleting the following table. sss 8 → 45°, 10 → 36°, 12 → 30° sss Calculate the angle between

asked Jan 18, 2022 in 8th-maths

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Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him bycompleting the following table. sss 8 → 45°, 10 → 36°, 12 → 30° sss How many spokes would

asked Jan 18, 2022 in 8th-maths

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A contractor estimates that 3 persons could rewire Jasminder’s house in 4 days. If, he uses 4 persons instead of three, how long should they take to complete the

asked Jan 18, 2022 in 8th-maths

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A factory requires 42 machines to produce a given number of articles in 63 days. How many machines would be required to produce the same number of articles in 54

asked Jan 18, 2022 in 8th-maths

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A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80

asked Jan 18, 2022 in 8th-maths

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `16x^4 –

asked Jan 17, 2022 in 8th-maths

Questions by Arun

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