Question

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

Answer 1

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!

Answer 2

Answer:

Solution :-

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