## anonymous 4 years ago the diameter of the moon is 3480km. (a) whats the surface area of the moon? (b)how many times larger is the surface area of the earth?

1. anonymous

surface area of a sphere is $4\pi*r^2$ r=radius...

2. anonymous

assuming spherical shape to moon, its radius is 3480/2 km... substitute to find the area

3. anonymous

can u show me the work like how u got that

4. anonymous

got what?

5. anonymous

area?

6. anonymous

yeah

7. anonymous

value of pi is approximately 3.14... just substitute surface area=4*(3.14)*(1740)^2 sq.km