Density is mass divided by volume, so 81/30=2.7
Don't forget your units!
To find 30 percent of a number, multiply the number by 0.3. In this instance, 0.3 x 81 = 24.3. Therefore, 30 percent of 81 is equal to 24.3.
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Multiply 9 x 8. Volume = Pi/4 x D2 x H so Volume = Pi/4*81*8 = Pi*81*2 = 508.938 cubic cm.
A centimetre is a measure of length in 1-dimensional space so nothing can have a volume of 30 cm.A block of aluminium, with a volume of 30 cubiccentimetres, has a mass of 81 grams.
Determine the value of log 3 81 If A B n(A) 4, n(B) 7 the n(A B) = The product of the zeros of the polynomial 7 10 2 x x is A) B) C) D) If the system of equations 4x 5y 9, 8x ky 18 has infinitely many solutions then k = A) 8 B) 9 C) 10 D) 1 The discriminant of 2 5 3 0 2 x x is A) 1 B) C) 25 D) 24
Density is given by mass over volume. Consider the example: 1. Given, density = 5 kg/m3 = [kilogram per cubic metre or kilogram per metre cubed]. Volume = 10 m3 To find mass: Density = Mass/Volume. => Mass = Density X Volume = 5 X 10 = 50 kg To compare this with value in g, know that 1 kg = 1000 g. ==> 50 kg = 50 X 1000 = 50000 g 2. Given, density = 3 kg/l = [kilogram per cubic litre] Mass = 81 kg To find volume: Density = Mass/Volume => Volume = Mass/Density = 81 / 9 = 27 L Length = cube root of volume = cube root of 27 = 3 To compare this with a value in mL, know that 1 L = 1000 mL => 3 L = 3 X 1000 = 3000 mL
To calculate density, you must calculate the mass divided by the volume. Therefore, density=234 g/ 2.9 cm3 = 80.6896... g/cm3 or 81 g/cm3 using significant figures.
Earth has about 50 times the volume of the Moon (and 81 times the mass of the Moon).
The volume of the Moon is 2% compared to the Earth. You would need 81 objects with the mass of the Moon to match the mass of the Earth.
2.7
The volume will change with the temperature of the aluminium, so there is no one answer to this. At room temperature, the density of aluminium is about 2.7 kilogrammes per cubic metre, and so you should be able to do a division sum to work out the answer.
30/81 simplifies to 10/27
The GCF is 3.
They are: 3*27 = 81 and 3+27 = 30
The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30 The factors of 81 are: 1, 3, 9, 27, 81