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.
Cover the injury. Use a bandage that is appropriate to the size of the area, provides protection to the wound, keeps the area closed, and covers the injury completely. Exposure to air does not interfere with healing but it also does not help with scar prevention.n fact, it can speed up the process. 1  If a scar does form, using petroleum jelly can minimize the size of the scar as the tissues heal. 2  Scabs are the bodyâs natural way of forming a protective covering over a fresh injury; however, just beneath the scab is where the scar is starting to form.