Question

- attachment below!
[seventh grade]

Answer 1

Area of smaller triangle = 1/2 × 3 × 2 = 3 m^2

Area of rectangle = 5 × 3 = 15 m^2

Area of bigger triangle = 1/2 × 3 × ( 12 - (5+2)) = 1/2 × 3 × 5 = 15/2 m^2 or 7.5 m^2

Area of trapezoidal window = (3 + 15 + 7.5) m^2 = 25.5 m^2

Answer 2

Answer:

area of trapezium=h(l+b)/2

therefore,3(5+12)/2

3×13/2

39/2

14.5

answer is 14.5 m^2