Question

Which of the following is/are true about perimeter?

• A. The perimeter is the total measure of the boundary of a closed figure.
• B. The perimeter of the rectangle is $2(l\times b)$.
• C. The perimeter of a figure is the portion inside a closed figure.
• D. The perimeter of circle is $\pi r^2$.

Answer 1

Answer: (A), (B)

The correct options are
A The perimeter is the total measure of the boundary of a closed figure.
B The perimeter of the rectangle is $2(l\times b)$.

The perimeter is the total measure of the boundary of a closed figure.Thus perimeter means measuring around a figure or along a curve.The perimeter of a rectangle is $2(l\times b)$ and perimeter of a circle is $2\pi r$.