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

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From the following table, determine if x and y are in direct proportion or not. x 1 4 9 20 y 1.5 6 13.5 20

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

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The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same

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

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At a particular time, the length of the shadow of Qutub Minar whose height is 72 m is 80 m. What will be the height of an electric pole, the length of whose shadow at the same time is 1000

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

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Match each of the entries in Column I with the appropriate entry in Column II Column I Column II 1. x and y vary inversely to each other A. x y = Constant 2. Mathematical representation of inverse B. y will increase in proportion variation of quantities p and q 3. Mathematical representation of C. xy = Constant direct variation of quantities m and n 4. When x = 5, y = 2.5 and when D. p ∝ 1 q y = 5, x = 10

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

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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 18, 2022 in 8th-maths by Simran (1.8k points)

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A bowler throws a cricket ball at a speed of 120 km/h. How long does this ball take to travel a distance of 20 metres to reach the

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

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Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher

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

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What is the area of the triangle ADE in the following figure?

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

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What will be the change in the volume of a cube when its side becomes 10 times the original

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

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

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The ratio of radii of two cylinders is 1: 2 and heights are in the ratio 2:3. The ratio of their volumes

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

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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 18, 2022 in 8th-maths by purvi (1.8k points)

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The perimeter of a rectangle becomes __________ times its original perimeter, if its length and breadth are

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

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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 18, 2022 in 8th-maths by Simran (1.8k points)

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The area of a trapezium with equal non-parallel sides is 168 `m^2`. If the lengths of the parallel sides are 36 m and 20 m, find the length of the non-parallel

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

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Mukesh walks around a circular track of radius 14 m with a speed of 4 km/hr. If he takes 20 rounds of the track, for how long does he

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

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A running track has 2 semicircular ends of radius 63 m and two straight lengths. The perimeter of the track is 1000 m. Find each straight

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

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Find the perimeter of the given figure.

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

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Find the length of the largest pole that can be placed in a room of dimensions `12 m xx 4 m xx 3 m`. Find the area of the following fields. All dimensions are in

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

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