Answer:
73.2sq.in
Step-by-step explanation:
Area of the triangle = 1/2 * base * height
Get the height using the pythagras theorem
h^2 = 13^2 - (13/2)^2
h^2 = 169 - (6.5)^2
h^2 = 169 - 42.25
h = 11.26in
Area of the triangle = 1/2 * 13 * 11.26
Area of the triangle = 6.5 * 11.26
Area of the triangle = 73.2sq.in
Hence the area of the triangle to nearest tenth is 73.2sq.in
