Question

What is the surface area of an enlarged prism

(Full question) A right rectangular prism has the length of 6 cm a width of 8 cm and the height of 4 cm. The dimensions of the prism are doubled.

What is the surface area of the enlarged prism?

I need help

Answer 1

well if the size is doubled so your original dimensions are (L)6 (W)8 (H)4 then turns into (L)12(W)16(H)8 so you plug them into the formula SA=(wL+hL+hw). It then becomes 2(16x12+8x12+6x16) you do parentheses first.
16x12=192
8x12=96
6x16= 128
192+96+128=416
416x2=832
so your final answer is 832