Area (Sqaures and rectangles): แบบฝึกหัด

The length of a rectangular garden is \(15\text{ m}\) and its width is \(8\text{ m}\). Find its area.

The length of a rectangle is \(14\text{ cm}\), and its width is half of its length. What is the area of the rectangle?

A rectangle is formed by joining two identical squares side by side. If the perimeter of the resulting rectangle is \(30\text{ cm}\), what is the area of the rectangle?

The length of a rectangular garden is \(15\text{ m}\) and its width is \(8\text{ m}\). Find the area of the garden.

The perimeter of a square painting is \(36\text{ cm}\). What is the area of the painting?

A rectangular card is \(15\text{ cm}\) long and \(8\text{ cm}\) wide. What is the area of the card?

The perimeter of a square photo frame is \(36\text{ cm}\). Find the area of the photo frame.

The perimeter of a rectangular rug is \(40\text{ m}\). If the length is three times as long as its width, find the area of the rug.

A rectangular whiteboard has a length of \(150\text{ cm}\) and a width of \(80\text{ cm}\).
a) What is the area of the whiteboard in square centimetres?
b) If a square drawing with a side length of \(30\text{ cm}\) is pasted on the board, what is the remaining area of the whiteboard?

A rectangular floor measures \(6\text{ m}\) by \(4\text{ m}\). It is to be tiled using square tiles with side lengths of \(20\text{ cm}\).
a) Convert the floor dimensions to centimetres.
b) How many tiles are needed to cover the floor?