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A rectangular paper of width 14 cm is rolled along its width and a cylinder of radius 20 cm is formed. Find the volume of the cylinder (Fig 11.45)? (Take `22/7` for

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

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Find m so that `(–3)^(m + 1) xx (–3)^5 =

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

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Evaluate

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

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The cost of 5 metres of a particular quality of cloth is Rs 210. Tabulate the cost of 2, 4, 10 and 13 metres of cloth of the same

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

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If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh `2 1/2`

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

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Can a polyhedron have V = F = 9 and E = 16 ? If yes, draw its

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

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Match the following: Figure Name Figure Name (a) (a) Hexahedron (b) (b) Hexagonal Prism (c) (c) Square Pyramid (d) (d) Cone

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

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The side of a square board is 50 cm. A student has to draw its image in her notebook. If the drawing of the square board in the notebook has perimeter of 40 cm, then by which scale the figure has been

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

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The distance between school and house of a girl is given by 5 cm in a picture, using the scale 1 cm : 5 km. Find the actual distance between the two

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

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Number of terms in the expression `a^2 + bc xx d` is

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

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Factorise the following expressions. `24x^2yz^3 – 6xy^3z^2 + 15x^2y^2z –

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

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Factorise the following, using the identity `a^2 + 2ab + b^2 = (a + b)^2` `x^2 + 2x +

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

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Factorise the following. `y^2 + 4y –

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

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If x – y = 13 and xy = 28, then find `x^2 +

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

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Verify the following: `(a – b) (a – b) (a – b) = a^3 – 3a^2b + 3ab^2 –

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

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Take suitable number of cards given in the adjoining diagram [G`(x xx x)` representing `x^2`, R `(x xx 1)` representing x and Y `(1 xx 1)` representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: (i) `2x^2 + 6x + 4` (ii) `x^2 + 4x + 4`. Factorise `2x^2 + 6x + 4` by using the figure.

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

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The standard form for 32,50,00,00,000 is

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

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On dividing `8^5` by _________ we get

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

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Simplify: -1. `(49 xx z^(-3))/(7^(-3) xx 10 xx z^(-5))`

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

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Find the value of x so that `(2^(–1) + 4^(–1) + 6^(–1) + 8^(–1))x =

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

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