The moon has an average diameter of 3476 kilometers. What would be the surface area of the moon if its surface were completely smooth? Round to the nearest hundredth.

Question

mrnood · Answer

you  can assume the moon is a sphere

do oyu know the formula for the surface area of a sphere?

ellamoyseyuk · Answer

s.a = 4pi r^2

ellamoyseyuk · Answer

s.a = 4 pi (3476)^2

mrnood · Answer

ok good

so you are given the diameter - whast is the radius?

then use the radius to work out th earea from your formula

ellamoyseyuk · Answer

1738

ellamoyseyuk · Answer

s.a  =4 pi(1738)^2
S.a = 4 pi (3020644)
s.a =37958531.998

ellamoyseyuk · Answer

so the answer is 37,958,532 km2 correct?

mrnood · Answer

Correct! Well done

SO apart from converting to radius - from diameter - you lready knew all you neede to solve this