Question

The net of a rectangular prism and its dimensions are shown in the diagram.

7.5 in.
7.5 in.
3 in.
3 in.
11.5 in.
11.5 in.
What is the total surface area of the rectangular prism in square inches?
A 143.25 in.2
B 241.5 in.?
C 258.75 in
D 286.5 in.?

Answer 1

D! I got it correcttt

Explanation:

Answer 2

D.

Explanation:

Given: Dimensions of a rectangular prism are
`7.5\,\,inches,3\,\,inches\,,\,11.5\,\,inches`

To find: total surface area of the rectangular prism in square inches

Solution:

Length of the rectangular prism (l) = 7.5 inches

Breadth of the rectangular prism (b) = 3 inches

Height of the rectangular prism (h) = 11.5 inches

Total surface area of the rectangular prism = 2(lb+bh+hl)

=
`2(7.5*3+3*11.5+11.5*7.5 )`

`2(7.5*3+3*11.5+11.5*7.5 )=2(22.5+34.5+86.25)\\=2(143.25)\\=286.5\,\,square \,\,inches`

So, option D is correct