1 Answer

Psadac · Answer 1 · 2020-11-09T08:05:48+0000

Answer:

Total Surface Area = 375
ft^2

You need to find the area of the ceiling, floor, the two rectangle walls and the two trapezoid walls

Area of the ceiling:

c = length * width

c = 9*6.5 = 58.5

Area of the 2 rectangle walls:

w = 2(length * width)

w = 2(9 * 8)

w = 2(72)

w = 144

Area of floor:

f = 9 * 7.5

f = 67.5

Area of the two trapezoids:

t = 2(h * (a + b)/(2))

a = 6.5

b = 7.5

h = 7.5

t = 2(h * (a + b)/(2))

t = 2(7.5 * (6.5 + 7.5)/(2))

t = 2(7.5 * (14)/(2))

t = 2(7.5 * 7)

t = 2(52.5)

t = 105

Total Surface Area = c + w + f + t

Total Surface Area = 58.5 + 144 + 67.5 + 105

Total Surface Area = 375
ft^2