Ineed with all of them asap 13, 14, 15 find the surface area (picture included)

13.
find the areas of each individual recatngle and add them
rectangles of same color have same area
area=legnth times width

green=9 times 7.2=64.8
blue=7.2 times 6=43.2
yellow=9 times 6=54
double all of them and dd them since they have 2 rectangles of each color
64*2+63.2*2+54*2=324 m^2

14.
the formula can be condensed into
SA=2(LW+LH+WH)
SA=surface aera
LW=legnth times width
LH=legnth times height
WH=width times height

L=7
W=5
H=3
SA=2(7*5+7*3+5*3)
SA=2(35+21+15)
SA=2(71)
SA=142 ft^2

15. SA=2(LW+LH+WH)

L=12.7
W=8.1
H=4.3
SA=2(12.7*8.1+12.7*4.3+8.1*4.3)
SA=2(102.87+54.61+34.83)
SA=2(192.31)
SA=384.62 cm^2

16. SA=2(LW+LH+WH)

L=38
W=19
H=19
SA=2(38*19+38*19+19*19)
SA=2(722+722+361)
SA=2(1805)
SA=3610 in^2

17. SA=2(LW+LH+WH)

L=7.5
W=5.5
H=9

a.
SA=2(7.5*5.5+7.5*9+5.5*9)
SA=2(41.25+67.5+49.5)
SA=2(158.25)
SA=316.5 in^2

b. 7.5 times 2=15
newL=15
SA=2(15*5.5+15*9+5.5*9)
SA=2(82.5+135+49.5)
SA=2(267)
SA=534 in^2

c.
newL=7.5/2=3.75
SA=2(3.75*5.5+3.75*9+5.5*9)
SA=2(20.625+33.75+49.5)
SA=2(108.875)
SA=207.75 in^2

PLEASE READ THROUGH ALL STEPS TO GET ANSWERS

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