Question

what is the surface area of this rectangular prism, ? 1. 52.5mm2 2. 18cm2 3. 28.5 cm 2 (i picked 18cm2)

Answer 1

Which prism...Methinks I need t'see a prism before I can solve...

Answer 2

yes here it is @NickDantzlerward

Answer 3

/brb im going to the bathroom for a minute/

Answer 4

/bak

Answer 5

Well, we know the height...And we know the length of one of the sides of the base... Try splitting up this box into several shapes. Here:



Dat will be one of the tall rectangles of this box. The area of this side is equal to (8)*(1.5), which equals: 12. There are four of these tall rectangles, so we'll multiply 12 by 4 to get: 48 mm. Now, we'll solve for the base:



The area is equal to 2.25. But there are two of these little squares! So we multiply 2.25 by 2 to get 4.5. Now, we add these total areas and get: 48 + 4.5 = 52.5 mm.

^_^ That work for ya?

Answer 6

yes :) ty

Answer 7

Sweeeeeeeeeet. Good luck! :D