The answer is 35cm 2. To find the area, you need to divide the shape into a rectangle and a triangle: The area of the rectangle is 5 Ã 4 = 20cm 2. The base of the triangle is calculated by subtracting the base of the rectangle (4cm) from the total length of the shape (10cm).
A handful of studies have found that when wounds are kept moist and covered, blood vessels regenerate faster and the number of cells that cause inflammation drop more rapidly than they do in wounds allowed to air out. It is best to keep a wound moist and covered for at least five days.
1 Washing a cut or scrape with soap, and water and keeping it clean and dry is all that is required to care for most wounds. 2  Cleaning the wound with hydrogen peroxide and iodine is acceptable initially, but can delay healing and should be avoided long-term. 3  Apply antibiotic ointment and keep the wound covered.