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kakasveta [241]
3 years ago
14

What is the surface area of this rectangular prism? 5 ft 4 ft 12 ft

Mathematics
2 answers:
givi [52]3 years ago
5 0

Answer:

256 ft²

Step-by-step explanation:

SA=2(lw+lh+wh) where l is length and w is width and h is height

Plug in the given information

SA=2(5*4+5*12+4*12)\\SA=2(20+60+48)\\SA=2(80+48)\\SA=2(128)\\SA=2(128)\\SA=256

Therefore, the surface area of the rectangular prism is 256 ft².

I hope this helps!

Serggg [28]3 years ago
5 0

Answer:

<h2><u>Solution</u><u> </u><u>:</u><u>-</u></h2>

We know that

SA = 2(lw + wh + lh)

SA = 2[(5 × 4) + (4 × 12) + (5 × 12)]

SA = 2[20 + 48 + 60]

SA = 2[128]

SA = 256 ft²

\\

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