Question

Which of the following have the same perimeter?

• A. A rectangle with length 2 cm and breadth 1 cm.
• B. A square of side 4 cm.
• C. A rectangle with length 7 cm and breadth 1 cm.
• D. A regular octagon of side 2 cm.

Answer 1

Answer: (B), (C), (D)

The correct options are
B A square of side 4 cm.
C A rectangle with length 7 cm and breadth 1 cm.
D A regular octagon of side 2 cm.

From the given options,
Perimeter of the rectangle with length 2 cm and breadth 1 cm = 2 (length + breadth) = 2 (2 + 1) = 2 (3) = 6 cm
Perimeter of a square of side 4 cm = 4 (side) = 4 (4) = 16 cm
Perimeter of the rectangle with length 7 cm and breadth 1 cm = 2 (length + breadth) = 2 (7 + 1) = 2 (8) = 16 cm
Perimeter of a regular octagon of side 2 cm = 8 (side) = 8 (2) = 16 cm