#color(white)("XXXX")##A = (b*h)/2# #color(white)("XXXX")##color(white)("XXXX")#where #b# is the base #color(white)("XXXX")##color(white)("XXXX")#and #h# is the height (= altitude)

The area of the given triangle is #color(white)("XXXX")##A= (17*8)/2 = 68# (square meters)