Use P = 21 +2w to find the perimeter of the given box. Then find the area using A-lw.

OP=16.8m; A = 16.8m²
OP = 16.8m; A = 69.75m²
OP= 33.6m; A = 33.6m²
OP = 33.6m; A = 69.75m²
1=9.3m
w= 7.5m

To find the perimeter of the given box, we can use the formula P = 21 + 2w, where P represents the perimeter and w represents the width of the box.

Substituting the given values, which are w = 7.5m, into the formula, we get:

P = 21 + 2(7.5)
P = 21 + 15
P = 36

So, the perimeter of the given box is 36m.

To find the area of the given box using the formula A = lw, where A represents the area, l represents the length, and w represents the width, we need the length of the box.

Unfortunately, the length of the box is not given in the question. We only have the values for the perimeter (OP = 16.8m) and area (A = 16.8m²). Therefore, we cannot find the area of the box using the given information.