Question

Use the formula SA = 2(lw) +2 (wh) + 2(lh) to find the surface area for a rectangular prism with the length l of ​2.7 yd, a width w of 1.77 yd​, and a height h of 6 yd.

Answer 1

Answer:

Answer

Correct option is

B

4

Original area A=2lw+2lh+2wh

Now if each dimensions are doubled, then

New are will be A

′

=2(2l)(2w)+2(2l)(2h)+2(2w)(2h)=4(2lw+2lh+2wh)=4A

So if all dimensions are doubled then surfaced area will multiplied by factor of 4

Answer 2

Answer:

$SA=63.198sq.yd$

Step-by-step explanation:

Given,

$l=2.7yd,w=1.77yd,h=6yd.$

Formula:

Surface area of a rectangular prism $=2(lw)+2(wh)+2(lh)$

                                                      $SA=2(2.7*1.77)+2(1.77*6)+2(2.7*6)$

                                                      $SA=9.558+21.24+32.4$

                                                      $SA=63.198sq.yd$