Question

Please help me on this problem​

Answer 1

Answer:

Total Surface Area = 375 $ft^2$

Step-by-step explanation:

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:

$t = 2(h * \frac{a + b}{2})$

a = 6.5

b = 7.5

h = 7.5

$t = 2(h * \frac{a + b}{2})$

$t = 2(7.5 * \frac{6.5 + 7.5}{2})$

$t = 2(7.5 * \frac{14}{2})$

$t = 2(7.5 * 7)$

$t = 2(52.5)$

$t = 105$

Total Surface Area = c + w + f + t

Total Surface Area = 58.5 + 144 + 67.5 + 105

Total Surface Area = 375 $ft^2$