What is the surface area of the right rectangular prism

Question

anonymous · Answer

What is the length, width, and height?

friendzone · Answer

attachment

friendzone · Answer

i posted wrong thing hold on

anonymous · Answer

Can't you just tell me what they are instead of posting it?

friendzone · Answer

@imqwerty can u explain this please my answer was 24

friendzone · Answer

@mazmaz1

anonymous · Answer

lol i got 24 also and only reason being is multiply L*W*H would be 6 and it isn't a choice so instead i put L*W/h since it is .5

anonymous · Answer

so i got 24 buttt @imqwerty should help lol

anonymous · Answer

If I know the Length, Width, and Height I can tell you the answer

imqwerty · Answer

to find the surface area of rectangular prism use this formula-|dw:1454955373504:dw|

anonymous · Answer

what is that qwerty ._. ????

imqwerty · Answer

that is the formula to find out the surface area of right rectangular prism :)
in our case we have |dw:1454955610930:dw|
$l=4m$
$h=0.5m$
$w=3m$
so just put them in that equation to get the surface area

friendzone · Answer

14m2 would be the answer

imqwerty · Answer

you made some calculation error ig :)
alright i'll guide you through the calculations

friendzone · Answer

its not 31 or 7 so it would be 24

imqwerty · Answer

no no :) it will be 31

so we have this formula for surface area->

$\Large Surface~Area=2(wl+hl+lw)$

we have $w=3m$
$l=4m$
$h=0.5m$
so we put them in equation we get this-

$\large Surface~area=2(3 \times 4 + 0.5 \times 4 + 0.5 \times 3)$

$\large Surface~area=2(12+ 2 + 1.5)$

$\large Surface~area=2(15.5)$

$\large Surface~area=31m^2$