7the density of the american white oak tree is 752 kilograms per cubic meter. if the trunk of an american white oak tree has a circumference of 4.5 meters and the height of the trunk is 8 meters, what is the approximate number of kilograms of the trunk?

First, we determine the volume of the trunk by finding first the radius from the circumference through the equation,

                                                            C = 2πr

                                                            r = C/2π

Substituting the known values,

                                                            r = 4.5/2π = 0.716 m

Then, we calculate for the volume through the equation,

                                                            V = πr2h

                                                V = π(0.716 m)2(8m) = 12.9 m3

Multiplying the calculated value to the density will give the mass as,

                                                Mass = (12.9 m3)(752 kg/m3) = 9699.36 kg

spare some change and give it to the poor

explanation:

plz : ((

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.