Question

http://prntscr.com/6n4tpe

Answer 1

Not quite. The formula to find the SA is

\(\rm \color{red}{SA~=~2(lw + lh + wh)}\)

l = length
w = width
h = height

Answer 2

L=447 W=413 H=729

Answer 3

Right, so

\(\rm \color{red}{SA~=~2(447*413 + 447*729 + 413*729)}\)

Answer 4

http://prntscr.com/6n4uxo i got this

Answer 5

You did something wrong

Answer 6

Multiply everything first

Answer 7

Then add it together, then multiply the sum of the numbers by 2

Answer 8

http://prntscr.com/6n4vb6 i got this

Answer 9

Ok let's do this step by step..

SA = 2(447*413+447*729+413*729)
SA = 2(\(\rm \color{red}{447*413}\)+447*729+413*729)

What is 447*413

Answer 10

184611

Answer 11

Yes, 184611

SA = 2(184611 + 447 * 729 + 413 * 729)
SA = 2(184611 + \(\color{red}{447 * 729}\) + 413 * 729)

What is 447*729

Answer 12

325863

Answer 13

Yes, 325863

SA = SA = 2(184611 + 325863 + 413 * 729)
SA = SA = 2(184611 + 325863 + \(\color{red}{413 * 729}\))

What is 413*729

Answer 14

301077

Answer 15

Correct, 301077

SA = 2(184611 + 325863 + 301077)

Now, what is 184611 + 325863 + 301077

Answer 16

811551

Answer 17

Right! 811551

SA = 2(811551)

What is 2*811551

Answer 18

1623102

Answer 19

So SA = 1623102

Answer 20

Thanks man

Answer 21

No problem

Answer 22

hello prettygirl