Question

1. Three same-sized cubes are attached to the top of a rectangular prism as shown below.


If a = 9 cm, b = 24 cm, and c = 3 cm, what is the surface area of the figure?
1,134 square centimeters
945 square centimeters
1,161 square centimeters
1,188 square centimeters

Answer 1

https://app149.studyisland.com/pics/257295qnumber4.png

Answer 2

o study island

Answer 3

yes it sucks

Answer 4

I hate study island so much

Answer 5

me 2

Answer 6

what is the surface area of a cube?

Answer 7

3cm\[3cm ^{2}\]

Answer 8

hmm how?

Answer 9

and i was asking for the formula actually not number

Answer 10

o

Answer 11

well how are you supposed to this if you don't know the formulas?

Answer 12

the cubes surface area is \[Area=6a^2\] where a is the side of the cube

Answer 13

in your case the side of the little cubes is c not a
just a switch in letter

Answer 14

the surface area of prism with two square faces is
\[Area= 2ab+2a^2\]

Answer 15

so the total Surface Area is:
\[Area=2ab+2a^2+6c^2\]

Answer 16

just plugging the values and you get the answer

Answer 17

k thanx