Question

Niel is solving a jigsaw puzzle but cannot seem to find the last piece.
He knows that the perimeter of the missing piece is 39 cm.
Which is the correct piece?

• A. (B)
• B. (D)
• C. (A)
• D. (C)

Answer 1

The correct option is D (C)

The perimeter of a figure can be calculated by adding the dimensions of each side.

Let's find the perimeter of each piece.

1. Perimeter of figure (A):
11 cm + 13 cm + 7 cm + 8 cm + 7 cm = 46 cm

2. Perimeter of figure (B):
10 cm + 12 cm + 8 cm + 6 cm + 8 cm = 44 cm

3. Perimeter of figure (C):
9 cm + 11 cm + 7 cm + 5 cm + 7 cm = 39 cm

4. Perimeter of figure (D):
3 cm + 9 cm + 7 cm + 10 cm + 12 cm = 41 cm

Thus, the piece having a perimeter of 39 cm is (C).