Three pieces of lead are placed in a container. The first piece has a mass of
27.23 kg, the second piece has a mass of
6.9 kg, and the third piece has a mass of
4.268 kg. What is the total mass of the
lead?
[?] kg
Round to the correct number of significant digits.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2