Hi, i have a question where as it tells me that i need to find the area, i know to find the area of a traingle its half the base times the height, just i don't have the height and don't know how to find it inorder to find the area. the triangle is isoceles and has a 8cm base two sides are 5cm each and it has a dashed line for the height (h) with the square thing 90c angle. please help me find the height