Answer:
The answer is 220cm^2
Step-by-step explanation:
Preliminary knowledge:
Area of triangle is 1/2 x Base x Height
Area of a square is Length x Width
Step-by-step explanation:
Solving for the sides of the triangle, the base is the bottom 18cm - top 7cm, giving us a base of 18cm-7cm=11cm. The height of the triangle is given by the left 15cm - the right 11 cm, giving a height of 15cm-11cm=4cm
We can now solve for the area of the triangle using the equation of a triangle (1/2 x Base x Height). 1/2 x 11cm x 4cm = 22cm^2
We can also solve for the area of the rectangle with the formula of Length x Width = Area. Our length is 18cm and our width is 11 cm. 18cm x 11cm = 198cm^2
The final area is just the two areas added together:
198cm^2 + 22cm^2 = 220cm^2