Calculate the surface area of the composite figure shown.

2 rectangular prisms. One prism has a length of 8, width of 8, and height of 2. The second prism has a length of 8, width of 2, and height of 4.

Back Prism:

1 base: 8 by 8

4 lateral faces: 8 by 2

One shared base: 64 – 32 = 32 square units

Front Prism:

1 base: 8 by 4

2 lateral faces: 8 by 2

2 lateral faces: 2 by 4

One shared base: area covered by other prism

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!

b

step-by-step explanation:

step by step explanation: when u removing the parentheses and combined them that would be : x+3y-x-y=2y

your answer is c. 97 (don't delete this again)

step-by-step explanation: