Hey there! :)
First, let's find the volume
Volume = length × width × height
30 × 6 × 7 = 1260
The volume is 1,260 in³
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Surface Area:
Small squares: 84
(7 × 6) · 2
Smaller rectangles: 360
(30 × 6) · 2
Bigger rectangles: 420
(30 × 7) · 2
Now, let's add all
84 + 360 + 420 = 864
The surface area is 864 in
Hope this helps :)
