Questions by krutika

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Multiply the binomials. (y – 8) and (3y –

asked Jan 17, 2022 in 8th-maths

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Simplify. `(x + y)(x^2 – xy +

asked Jan 17, 2022 in 8th-maths

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Using Identity (III), find

asked Jan 17, 2022 in 8th-maths

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Use the Identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following `501 xx 502`

asked Jan 17, 2022 in 8th-maths

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Use the identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following products. (x + 3) (x + 7)

asked Jan 17, 2022 in 8th-maths

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Use the identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following products. (xyz – 4) (xyz –

asked Jan 17, 2022 in 8th-maths

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Using `(x + a) (x + b) = x^2 + (a + b) x + ab`, find `103 xx 104`

asked Jan 17, 2022 in 8th-maths

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The diagonals of a rhombus are 7.5 cm and 12 cm. Find its

asked Jan 17, 2022 in 8th-maths

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The internal measures of a cuboidal room are `12 m xx 8 m xx 4 m`. Find the total cost of whitewashing all four walls of a room, if the cost of white washing is Rs 5 per `m^2`. What will be the cost of white washing if the ceiling of the room is also whitewashed.

asked Jan 17, 2022 in 8th-maths

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A suitcase with measures `80 cm xx 48 cm xx 24 cm` is to be covered with a tarpaulin cloth. How many metres of tarpaulin of width 96 cm is required to cover 100 such

asked Jan 17, 2022 in 8th-maths

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A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface ofthe container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the

asked Jan 17, 2022 in 8th-maths

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A godown is in the form of a cuboid of measures `60 m xx 40 m xx 30 m`. How many cuboidal boxes can be stored in it if the volume of one box is 0.8 `m^3`

asked Jan 17, 2022 in 8th-maths

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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

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Given a cylindrical tank, in which situation will you find surface area and in which situation volume. To find how much it can

asked Jan 17, 2022 in 8th-maths

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Simplify and write the answer in the exponential form. `(25 ÷ 28)^5 xx 2^(–

asked Jan 17, 2022 in 8th-maths

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Simplify and write the answer in the exponential form. `(– 4)^(– 3) xx (5)^(– 3) xx

asked Jan 17, 2022 in 8th-maths

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Simplify and express the result in power notation with positive exponent.

asked Jan 17, 2022 in 8th-maths

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Find the value of m for which `5^m ÷ 5^(– 3) =

asked Jan 17, 2022 in 8th-maths

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Express the following numbers in standard form.

asked Jan 17, 2022 in 8th-maths

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Express the following numbers in usual form. `4.5 xx

asked Jan 17, 2022 in 8th-maths

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