The surface area of a rectangular prisms that are

Question

3.5ft. x 4.25ft. x 6ft

Answer 89.25ft

2.33 meters x 2.5meters x 4meters

Answer 23.3 meters

Am I correct

Answer 1

Nope. Multiplying the lengths of sides gives you the volume. To get the surface area of a rectangular prism,
SA = 2(L*W + L*H + W*H)
where
L = length
W = width
H = height
therefore,
#1.
SA = 2(6*4.25 + 6*3.5 + 4.25*3.5)
SA = 122.75 ft^2

#2.
SA = 2(4*2.5 + 4*2.33 + 2.5*2.33)
SA = 50.29 m^2

hope this helps~ :)