physics

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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 :/

  • physics -

    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.

  • physics -

    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.

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