Answers?
for my revision lol

148cm²

Step-by-step explanation:

With the first frontal face of the cuboid, you have length 6 cm whilst the height remains 5 cm.

Find the area of this face and multiply the result by 2, as there are two of these faces (front and back)

6 x 5 = 30 cm²

30 x 2 = 60cm²

Do the same with the top face and bottom face, adding this with the side faces

4 x 6 = 24cm²

24 x 2 = 48cm²

4 x 5 = 20cm² x 2 = 40 cm²

40 + 48 + 60 = 148 cm²

T.S.A = 148cm²

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons