Answer:
Part 1)

Part 2)

Explanation:
The question in English is
A carpenter will cut plywood measuring 3.5 meters x 3.5 meters. Determine the area and perimeter of the plywood.
Part 1) Determine the area
we know that
The area of a square is given by the formula

where
b is the length side
we have

substitute

Part 2) Determine the perimeter
we know that
The perimeter of a square is given by the formula

where
b is the length side
we have

substitute
