The area of rectangular cover of a notebook is 63 sq cm. If the length is 9 cm, what is the width of the cover?
Area of rectangle = length × breadth
∴ 63 = 9 × breadth
⇒63÷9 = breadth
⇒ breadth = 7 cm
The area of a rectangular piece of a board is 288 cm2. If the width is twice the length, what is the width of the board?
The length of a rectangular notebook is 15 cm and the perimeter is 50 cm. Find the width and area of the notebook.
The area of a rectangular piece of a board is 36 cm2. If the length is 4 cm, what is the width of the board?