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A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per

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

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Find the area to be painted in the following block with a cylindrical hole. Given that length is 15 cm, width 12 cm, height 20 cm and radius of the hole 2.8 cm.

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)`. `y^4 –

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

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `51x^3y^2z -:

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. `–121p^3q^3r^3 -:

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

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Factorise the expressions and divide them as directed: `(2x^3 – 12x^2 + 16x) -: (x – 2) (x –

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

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Find the value of a, if `pqa = (3p + q)^2 – (3p –

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

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Subtract `b (b^2 + b – 7) + 5` from `3b^2 – 8` and find the value of expression obtained for `b = –

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

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In `2^n`, n is known

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

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The reciprocal of `(2/5)^-1`

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

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If x be any non-zero integer and m, n be negative integers, then `xm xx xn` is equal

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

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If x be any integer different from zero and m be any positive integer, then `x^–m` is equal

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

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Which of the following is equal to `(-3/4)^(-3)`

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

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For a non-zero integer x, `(x^4)^(–3)` is equal

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

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The standard form for 234000000

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

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The usual form for `2.03 xx

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

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`(1/10)^0` is equal

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

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For a non-zero rational number z, `(z^-2)^3` is equal

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

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Cube of `-1/2`

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

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Express `16^(–2)` as a power with the base

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

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