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.
Treatment for cuts and abrasions. 1  Keep the site dry and clean. It may be covered with an occlusive thin film dressing, which is waterproof and protective. 2  Only apply lotions or ointments to the wound if instructed to do so by medical staff. 3  Try not to exert yourself, as physical activity may cause the site to bleed.