Question

Find the surface area of the figure below.

Answer 1

Find the area of all 6 faces and add them up.

Answer 2

formula is = A= 2(wh + lw + lh ) . right ?

Answer 3

Yes. And what I suggested is all you're doing in that formula.

wh + lw + lh is adding up the areas of 3 faces. Multiplying it by 2 includes the other three.

Answer 4

3*2=6 ... 8*3=24 ... 8*2=16
6 + 24 + 16 = 46*2 = 92 !? (:

Answer 5

Seems right to me!

Answer 6

Surface area is the area of the lateral faces and the two bases (also known as faces).

SA of a rectangular solid is the perimeter of a base times the height of the solid PLUS the sum of the areas of the two rectangular bases.

SA = p*h + 2+B where B is the area of a rectangular base.

SA = ( 8 + 8 + 3 + 3) * 2 + 2 * ( 8 * 3) = ? @dopegyal_

Answer 7

22 + 4 + 24 = 50 ?? No. You did not double the 22 nor did you double the 24.

>> 46*2 = 92 !? (: --> your first answer is correct.

92 is what I got, also. @dopegyal_