Posted by **Tweets** on Tuesday, August 23, 2011 at 5:50am.

The surface area of a sphere is given by the formula 4pi r2, where is it's radius. Although the shape of earth is noth exactly spherical, it has an average radius of 3960 miles. Estimate the surface area of earth.

## Answer This Question

## Related Questions

- math - Describe all the points on the Earth’s surface that are exactly 4000 ...
- math - Describe all the points on the Earth’s surface that are exactly 4000 ...
- Calculus Homework - You are blowing air into a spherical balloon at a rate of 7...
- math - The earth has a radius of 6,380 km. The formula for the volume of a ...
- geometry - Satellite Explorer VII, with a = 4465 and b = 4462, and with the ...
- physics - Suppose that the displacement of a particle is related to time ...
- calculus *improper integrals* - A hole of a radius of 1cm is pierced in a sphere...
- Algebra 1 - Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate...
- math - direct variation the surface area of a sphere varies directly as the ...
- calculus - A hole of a radius of 1cm is pierced in a sphere of a 4cm radius. ...

More Related Questions