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

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The areas of any two faces of a cube are

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

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

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Four horses are tethered with equal ropes at 4 corners of a square field of side 70 metres so that they just can reach one another. Find the area left ungrazed by the

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

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Radius of a cylinder is r and the height is h. Find the change in the volume if the (a) height is doubled. (b) height is doubled and the radius is halved. (c) height remains same and the radius is

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

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A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per

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

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A truck carrying 7.8 `m^3` concrete arrives at a job site. A platform of width 5 m and height 2 m is being contructed at the site. Find the length of the platform, constructed from the amount of concrete on the

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

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A hollow garden roller of 42 cm diameter and length 152 cm is made of cast iron 2 cm thick. Find the volume of iron used in the

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

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Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant

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

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A swimming pool is 200 m by 50 m and has an average depth of 2 m. By the end of a summer day, the water level drops by 2 cm. How many cubic metres of water is lost on the

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

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What will happen to the volume of the cube, if its edge is (a) tripled (b) reduced to

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

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A cylindrical tank has a radius of 154 cm. It is filled with water to a height of 3 m. If water to a height of 4.5 m is poured into it, what will be the increase in the volume of water in

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

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How many bricks of size `22 cm xx 10 cm xx 7 cm` are required to construct a wall 11m long, 3.5 m high and 40 cm thick, if the cement and sand used in the construction occupy `(1/10)^(th)` part of the

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

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A birthday cake has two tiers as shown in the figure below. Find the volume of the cake.

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

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The given graph shows Nisha’s trip to a mall by a car. Observe the graph carefully and find what was she doing between 5 pm and 7

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

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The coordinates of the origin are

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

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Write the coordinates of all the points in the given

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

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The following is a conversion graph of temperature in °Cand °F.Use the graph to answer the following questions.(a) Convert 140 °F to °C.(b) Convert 20 °C to

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

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The point (3, 4) is at a distance

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

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