Answer:
30 times greater.
Step-by-step explanation:
We divide:
9 * 10^5 / 3 * 10^4
= 9/3 * 10^(5-4)
= 3 * 10^1
= 30.
Answer:
19.84
the decimal has to stay in the same place
Step-by-step explanation:
Answer:

Step-by-step explanation:
First we move the constant to the right and change its sign
we add the numbers and divide it by 3
and you get 8
The surface area formula for any sphere is 4(pi)(radius)^2
The radius is half of the diameter.
18.6 / 2 = 9.3
So, plug into the formula and solve.
4(3.14)(9.3)^2 = 1086.3 mm^2
0.8 = 1.6. this is because the model is shaded as 1.6 but 0.8 has been shown by underlining it underneath the model.