Answer:
46
Step-by-step explanation:
324 - 278 = 46
278 + 46 = 324
The answer is b
16-9=7
7+8=15r
The surface area would be 150cm and the volume would be 125cm. To get volume you do 5 cubed to get the answer 125. To get surface area you would do 5 multiplied by 5 multiplied by the cubes 6 sides to get 150.