Answer:
A) SA = 384 in²
Step-by-step explanation:
Equation for the surface area of a right pyramid: SA = B + 0.5Pl, where
- B = area of the base
- P = perimeter of the base
- l = lateral height
1. Find the perimeter of the square: since the area is 144 in², the side length is √144 in, which is 12 in. This means that the perimeter is 48 in.
2. Plug in: SA = 144 in² + 0.5(48 in)(10 in)
3. Multiply: SA = 144 + 240
4. Add: SA = 384 in², which is A
