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

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

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Area of a rhombus = `1/2` product of

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

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__________ surface area of room = area of 4

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

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Two cylinders of same volume have their radii in the ratio 1:6, then ratio of their heights is

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

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The areas of any two faces of a cube are

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

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Ratio of area of a circle to the area of a square whose side equals radius of circle is 1 :

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The area of a rectangular field is 48 `m^2` and one of its sides is 6m. How long will a lady take to cross the field diagonally at the rate of 20

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

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The areas of two circles are in the ratio 49:64. Find the ratio of their

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

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

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

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The radius and height of a cylinder are in the ratio 3:2 and its volume is 19,404 `cm^3`. Find its radius and

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

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The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per

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

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A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many `cm^3` of wood is used in

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

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While studying her family’s history. Shikha discovers records of ancestors 12 generations back. She wonders how many ancestors she has had in the past 12 generations. She starts to make a diagram to help her figure this out. The diagram soon becomes very complex. (a) Make a table and a graph showing the number of ancestors in each of the 12

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

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If a % is the discount per cent on a marked price x, then discount

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

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In a scout camp, there is food provision for 300 cadets for 42 days. If 50 more persons join the camp, for how many days will the provision

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

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

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A rectangular examination hall having seats for 500 candidates has to be built so as to allow 4 cubic metres of air and 0.5 square metres of floor area per candidate. If the length of hall be 25 m, find the height and breadth of the

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

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