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A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is
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Jan 17, 2022
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Evaluate
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Express the following numbers in usual form. `7.54 xx 10^(– 4)`
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Express the following numbers in standard form. 0.0000000000085
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Express the following numbers in standard form.
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Express the following numbers in standard form. 6020000000000000
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Express the following numbers in standard form.
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Express the number appearing in the following statements in standard form. Size of a plant cell is 0.00001275
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A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, whatwould be its enlarged
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Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the
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How many faces does each of the following solids, have? (a) Tetrahedron (b) Hexahedron (c) Octagonal Pyramid (d)
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Check whether a polyhedron can have V = 12, E = 6 and F =
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A solid has forty faces and, sixty edges. Find the number of vertices of the
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The actual length of a painting was 2 m. What is its length in the photograph if the scale used is 1 mm : 20 cm.
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Number of factors of `(a + b)^2 `
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Some of the factors of `n^2/2+n/2` are `1/2`, n and
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Subtract : `5a^2b^2c^2` from `–
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Factorise the following, using the identity `a^2 + 2ab + b^2 = (a + b)^2` `4x^4 + 12x^3 +
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Factorise the following. `y^2 + 18x +
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Verify the following: `(a + b) (a + b) (a + b) = a^3 + 3a^2b + 3ab^2 +
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