How do i put them all in sig fig form???
What is the volume in cubic cm of a sphere with radius 2 cm?
is it =
33.51032163829112
What is the area in m2 of a triangle with base 2.8 m and height of 10.4 m?
is it =
14.56
A sphere has a volume of 106 cm3. What is its radius (in cm)?
is it =
is it 6.297560287884612?
that doesnt look right :/
You have far too many numbers after the decimal point but the first one is right. The second one is right. And you are correct about the fourth one; i.e., it doesn't look right and isn't.
V = 4/3(pi)r^3 = 106
I get something like 3 but that isn't exact.
I re-read the problem and you are asking about sig fig.
For the first one, if 2 cm is the correct number (not 2.0 or 2.00), then you have only one sig fig so 33.51 would be rounded to 30.
For the second one, you are allowed 2; therefore, round to 15
For the third one, you are allowed 3 figures.
To put numbers in scientific notation, you need to determine the significant figures (sig figs) of each number and then write it in the appropriate format. Here's how you can put the given numbers in sig fig form:
1. The volume of a sphere with a radius of 2 cm is given as 33.51032163829112 cm³. To express it in sig fig form, consider that the radius has two significant figures. Therefore, the volume should also have two significant figures. The number in sig fig form would be 34 cm³.
2. The area of a triangle with a base of 2.8 m and a height of 10.4 m is calculated as 14.56 m². Since both the base and height have two significant figures, the area should also have two significant figures. Hence, the area in sig fig form would be 15 m².
3. For a sphere with a volume of 106 cm³, you need to find the radius. The volume formula for a sphere is V = (4/3)πr³, where r is the radius. Rearranging the formula, we get r = (3V / 4π)^(1/3). Plugging in the volume value, r = (3 * 106 cm³ / (4 * π))^(1/3) ≈ 4.928203230275509 cm. In sig fig form, this would be written as 4.9 cm, rounding to two significant figures.
So, the answers in sig fig form are:
1. 34 cm³
2. 15 m²
3. 4.9 cm