# physics

posted by .

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.

## Similar Questions

1. ### Physics

Sphere 1 has surface area A1 and volume V1, and sphere 2 has surface area A2 and volume V2. If the radius of sphere 2 is 3.5 times the radius of sphere 1, what is the ratio of each of the following?
2. ### Physics

What is the volume in cubic cm of a sphere with radius 2 cm?
3. ### college physics

Two solid spheres A and B are made from the same material. The mass of sphere B is eight times that of sphere A. If the radius of sphere A is 7.50 cm, what is the radius of sphere B?
4. ### college physics

Two solid spheres A and B are made from the same material. The mass of sphere B is eight times that of sphere A. If the radius of sphere A is 7.50 cm, what is the radius of sphere B?
5. ### calculus

3. The radius r of a sphere is increasing at a constant rate of 0.04 centimeters per second. (Note: The volume of a sphere with radius r is v=4/3pir^3 ). a. At the time when the radius of the sphere is 10 cm, what is the rate of increase …
6. ### Calculus (Parts A and B done, just help with C)

The radius, r, of a sphere is increasing at a constant rate of 0.05 meters per second. A. At the time when the radius of the sphere is 12 meters, what is the rate of increase in its volume?
7. ### calculus *improper integrals*

A hole of a radius of 1cm is pierced in a sphere of a 4cm radius. Calculate the volume of the remaining sphere. I know that the volume of a sphere with an exterior radius is of: V = pie(R^2 - r^2) dH where R^2 is the exterior surface …
8. ### physics

the earth is approximately sphere of radius 6.37*10^6 meter.what is its surface area in square km?
9. ### Physics

I'm having Sig fig troubles. What would 0.98*2040 be using Sig fig rules?
10. ### physics

Sphere 1 has surface area A1 and volume V1 and sphere 2 has surface area A2 and volume V2. If the radius of sphere 2 is 3.53 times the radius of sphere 1, what is the ratio of the areas A2/A1 ?

More Similar Questions