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A cube of side 5 cm is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the original cube to that of the sum of the surface areas of the smaller

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

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Factorise the expressions and divide them as directed: `(3x^2 – 48) -: (x –

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

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The area of a rectangle is `x2 + 7x + 12`. If its breadth is (x + 3), then find its

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

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The area of a circle is given by the expression `πx^2 + 6πx + 9π`. Find the radius of the

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

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The sum of first n natural numbers is given by the expression `n^2/2+n/2`. Factorise this

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

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If p + q = 12 and pq = 22, then find `p^2 +

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

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The distance between earth and sun is 150 million kilometres which can be written in exponential form as

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

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`(–10) xx (–10) xx (–10) xx (–10) =

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

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For a fixed base, if the exponent decreases by 1, the number

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

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`[(2/13)^(-1) -: (2/13)^3]^3 xx (2/13)^(-13)` =

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

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The usual form of `3.41 xx 10^6` is

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

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On multiplying _________ by `2^(–5)` we get

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

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The expression for `3^5` with a negative exponent is

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

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The standard form for 203000 is `2.03 xx

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

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`(2^n xx 2^6)/2^(-13) =

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

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If `(5^m xx 5^3 xx 5^(-2))/5^-5 = 5^12`, find

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

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Find a single repeater machine that will do the same work as each hook-up. (a) (b) (c) (d) (e) (f)

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

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Ashima took a loan of Rs 1,00,000 at 12% p.a. compounded half yearly. She paid Rs 1,12,360. If (1.06)2 is equal to 1.1236, then the period for which she took the loan

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

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Radhika bought a car for Rs 2,50,000. Next year its price decreased by 10% and further next year it decreased by 12%. In the two years overall decrease per cent in the price of the car

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

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The compound interest on Rs 8,000 for one year at 16% p.a. compounded half yearly is _________, given that `(1.08)^2 =

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

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