The surface area of a rectangular prism that has height of 4 inches, width of 9 inches and length of 3 inches = ____________ in2

Question

3 years ago

10

.

2 answers:

nevsk [136] · Answer 1 · 2022-09-17T14:30:37+03:00

8 0

Answer:

150

Step-by-step explanation:

S.A.=2(wl+hl+hw)=

2((3x9)+(4x3)+(4x9))

2(27+12+36)

2(75)

150

Sergeeva-Olga [200] · Answer 2 · 2022-09-17T16:47:27+03:00

Answer:

150 in^2

Step-by-step explanation:

The ends have the smallest surface area. The total surface area of the ends is thus 2(3 in)(4 in) = 24 in^2

The top and bottom together have the total surface area 2(9 in)(3 in) = 54 in^2.

Finally, the front and back surface areas together are 2(9 in)(4 in) = 72 in^2

Thus, the total surface area is (24 + 54 + 72) in^2 = 150 in^2