A rectangular prism has the following dimensions. length: 18 inches width: 1 foot height: 14 inches If all the dimensions of thi

Question

2 years ago

8

s prism are tripled, what will be the surface area of the new figure?
3,816 in.2
7,632 in.2
27,216 in.2
11,448 in.2

2 answers:

navik [9.2K] · Answer 1 · 2022-04-05T15:51:25+03:00

5 0

Answer:

11,448 in.2

Step-by-step explanation:

mojhsa [17] · Answer 2 · 2022-04-05T14:07:39+03:00

Answer:

11,448 in²

Step-by-step explanation:

The area can be computed from ...

... A = 2(LW +H(L+W))

For the given prism, the area will be ...

... A = 2(18·12 +14(18+12)) = 2(216 +420) = 1272 . . . . in²

The area of a similar figure with dimensions 3 times as long will be 3² times as much. The area of the new figure is ...

... A = 3²×(1272 in²) = 11,448 in²