Questions by uday

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A cuboidal tin box opened at the top has dimensions `20 cm xx 16 cm xx 14 cm`. What is the total area of metal sheet required to make 10 such

asked Jan 17, 2022 in 8th-maths

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Below are the drawings of cross sections of two different pipes used to fill swimming pools. Figure A is a combination of 2 pipes each having a radius of 8 cm. Figure B is a pipe having a radius of 15 cm. If the force of the flow of water coming out of the pipes is the same in both the cases, which will fill the swimming pool faster?

asked Jan 17, 2022 in 8th-maths

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Look at the shapes given below and state which of these are polyhedra using Euler’s formula.

asked Jan 17, 2022 in 8th-maths

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Count the number of cubes in the given shapes.

asked Jan 17, 2022 in 8th-maths

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Count the number of cubes in the given shapes.

asked Jan 17, 2022 in 8th-maths

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Using Euler’s formula, find the value of unknown x, y, z, p, q, r, in the following table. (i) (ii) (iii) (iv) (v) (vi) Faces 7 y 9 p 6 8 Vertices 10 12 z 6 q 11 Edges x 18 16 12 12 r

asked Jan 17, 2022 in 8th-maths

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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

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Draw the net of the following solid. (Hint: Pentagons are not congruent.)

asked Jan 17, 2022 in 8th-maths

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Draw a map of your school playground. Mark all necessary places like 2 library, Playground, Medical Room, Classrooms, Assembly area,

asked Jan 17, 2022 in 8th-maths

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Divide 15 `(y + 3) (y^2 – 16) by 5 (y^2 – y –

asked Jan 17, 2022 in 8th-maths

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Factorised form of `23xy – 46x + 54y – 108`

asked Jan 17, 2022 in 8th-maths

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On dividing `57p^2qr` by 114pq, we

asked Jan 17, 2022 in 8th-maths

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The product of two terms with unlike signs is a

asked Jan 17, 2022 in 8th-maths

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The common factor method of factorisation for a polynomial is based on ___________

asked Jan 17, 2022 in 8th-maths

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`(a + b) (a – b) = a^2 –

asked Jan 17, 2022 in 8th-maths

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`p^2q + q^2r + r^2q` is a

asked Jan 17, 2022 in 8th-maths

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h is a factor of `2pi (h +

asked Jan 17, 2022 in 8th-maths

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The value of p for `51^2 – 49^2 = 100p` is

asked Jan 17, 2022 in 8th-maths

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Add: `7a^2bc, – 3abc^2, 3a^2bc,

asked Jan 17, 2022 in 8th-maths

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Add: `xy^2z^2 + 3x^2y^2z – 4x^2yz^2, – 9x^2y^2z + 3xy^2z^2 +

asked Jan 17, 2022 in 8th-maths

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