So hmmm let's do the left-hand-side first

now, let's do the right-hand-side then
Answer:
1.63
HOPE THIS WILL HELP..............!
20
This is because
2x+(6x+20)=180
8x+20=180
8x=160
8x/8=160/8
X=20
A cell with 2cm sides has a surface area of 6 × a2 or <span> a</span>2<span> + a</span>2<span> + a</span>2<span> + a</span>2<span> + a</span>2<span> + a</span><span>2
</span>