Area of triangle =1/2 x b x h
where b is the base and h is the height of the triangle
height = 12 mm
base = 18mm + 10mm = 28 mm
substuting into the formula;
Area = 1/2 x 28 x 12
Area = 28 x 6
Area = 168 mm²
1.6m questions
2.0m answers