Marking the height of the traingle is 4m less than its base. the area of the traingle is 48m^2. find the length of the base. 1: 7m 2: 8m 3: 11m 4: 12m

Area of a triangle is = 0.5bh
if the height (h) is 4 less than base (b) then h = b - 4

48 = 0.5(b)(b - 4)
48/0.5 = b² - 4b
96 = b² - 4b
b² - 4b - 96 = 0
(b + 8)(b - 12) = 0

b must be either -8 or 12

since a distance can't be negative that means
the base is 12