Questions by Arun

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If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be ______

asked Jan 17, 2022 in 8th-maths

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Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is _______

asked Jan 17, 2022 in 8th-maths

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Length of a side of an equilateral triangle and its perimeter vary inversely with each

asked Jan 17, 2022 in 8th-maths

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If x varies inversely as y and when x = 6, y = 8, then for x = 8 the value of y is

asked Jan 17, 2022 in 8th-maths

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If x varies inversely as y and y = 60 when x = 1.5. Find x. when y =

asked Jan 17, 2022 in 8th-maths

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A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to cover a distance of 540 kilometres by this

asked Jan 17, 2022 in 8th-maths

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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

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If a and b vary inversely to each other, then find the values of p, q, r ; x, y, z and l, m, n. a 6 8 q 25 b 18 p 39 r

asked Jan 17, 2022 in 8th-maths

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In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions

asked Jan 17, 2022 in 8th-maths

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Ms. Anita has to drive from Jhareda to Ganwari. She measures a distance of 3.5 cm between these villages on the map. What is the actual distance between the villages if the map scale is 1 cm = 10

asked Jan 17, 2022 in 8th-maths

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Find the area of a rhombus whose one side measures 5 cm and one diagonal as 8

asked Jan 17, 2022 in 8th-maths

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The parallel sides of a trapezium are 40 cm and 20 cm. If its non-parallel sides are both equal, each being 26 cm, find the area of the

asked Jan 17, 2022 in 8th-maths

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If the height of a cylinder becomes `1/4` of the original height and the radius is doubled, then which of the following will be

asked Jan 17, 2022 in 8th-maths

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What is the area of the rhombus ABCD below if AC = 6 cm, and BE = 4cm?

asked Jan 17, 2022 in 8th-maths

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The surface areas of the six faces of a rectangular solid are 16, 16, 32, 32, 72 and 72 square centimetres. The volume of the solid, in cubic centimetres,

asked Jan 17, 2022 in 8th-maths

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The surface area of a cylinder which exactly fits in a cube of side b is

asked Jan 17, 2022 in 8th-maths

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If the diagonal d of a quadrilateral is doubled and the heights `(h_1)` and `(h_2)` falling on d are halved, then the area of quadrilateral is

asked Jan 17, 2022 in 8th-maths

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A trapezium with 3 equal sides and one side double the equal side can be divided into __________ equilateral triangles of _______

asked Jan 17, 2022 in 8th-maths

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Two cylinders of equal volume have heights in the ratio 1:9. The ratio of their radii is

asked Jan 17, 2022 in 8th-maths

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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

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