Origanal problem:
3*4*12=60 units cubed

where I'm confused:
What if each cube represented one cubic centimeter.
How would we represent the volume of the rectangular prism?
a) 60 cm squared
b) 120 cm squared
c) 12 cm squared
d) 5 cm sqaured

It would be the same thing except squared

Step-by-step explanation:

60 cm ^2

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

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!