Answer these in scientific notation with work shown, adding scientific notation.

1.8 x 10^5 + 2.8 x 10^1

9 x 10^-4 + 4 x 10-6

2.5 x 10^2 + 8.4 x 10^2

3.9 x 10^-1 + 1.6 x 10^-2

7 x 10^-2 + 9.57 x 10^-3

answer: the answer is ann

a

step-by-step explanation:

there still no table

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!