Perimeter (Squares and Rectangles): แบบฝึกหัด

A square floor tile has a side length of \(22\text{ cm}\). What is its perimeter?

A rectangle has a width of \(8\) cm. Its length is twice its width. What is the perimeter of the rectangle?

A square has a perimeter of \(36\) cm. It is cut into three identical rectangles using two parallel lines. What is the perimeter of one of these smaller rectangles?

A rectangular envelope is \(15\text{ cm}\) long and \(10\text{ cm}\) wide. What is its perimeter?

The width of a rectangular whiteboard is \(60\text{ cm}\). The length is \(30\text{ cm}\) longer than the width. Find the perimeter of the whiteboard.

The perimeter of a square window is \(200\text{ cm}\). What is the length of one side of the window?

A rectangle has a perimeter of \(64\) cm. If its length is \(6\) cm longer than its width, calculate the length of this rectangle.

A wire of length \(96\) cm is used to form the outline of two separate identical squares. If these two squares are later joined side-by-side to form a rectangle, what is the perimeter of this new rectangle?

A storybook has a rectangular cover that is \(25\text{ cm}\) long and \(18\text{ cm}\) wide.

(a) What is the perimeter of the book cover?
(b) If the length of the book cover is reduced by \(5\text{ cm}\), what will be the new perimeter of the cover?
(c) If a ribbon is wrapped around the boundary of the original book cover exactly two times, what is the total length of the ribbon used?

A rectangular playground is 25 m long and 18 m wide.
(a) Calculate the perimeter of the playground.
(b) If a student runs around the edge of the playground 3 times, what is the total distance the student runs?