Area = 1/2 x base x height
Find the height of the first triangle:
18 = 1/2 x 6 x height
36 = 6 x height
Height = 6 cm
Now use the area nad height of the second one to find the base:
32 = 1/2 x 6 x base
64 = 6 x base
base = 10 2/3 cm
8.8m questions
11.4m answers