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Metallic discs of radius 0.75 cm and thickness 0.2 cm are melted to obtain 508.68 `cm^3` of metal. Find the number of discs melted (use π =

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

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The ratio of the radius and height of a cylinder is 2:3. If its volume is 12,936 `cm^3`, find the total surface area of the

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

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External dimensions of a closed wooden box are in the ratio 5:4:3. If the cost of painting its outer surface at the rate of Rs 5 per d`m^2` is Rs 11,750, find the dimensions of the

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

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The capacity of a closed cylindrical vessel of height 1 m is 15.4 L. How many square metres of metal sheet would be needed to make

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k 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 17, 2022 in 8th-maths by purvi (1.8k points)

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A rectangular sheet of dimensions `25 cm xx 7 cm` is rotated about its longer side. Find the volume and the whole surface area of the solid thus

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

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From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in 1

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

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

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `p^5 –

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

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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 by purvi (1.8k points)

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

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

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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 by sumit (1.6k points)

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

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `8a^3 –

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

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

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

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `9x^2 – (3y +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 6x +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 3x +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 7x +

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 + 19x –

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

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