Question

find the area of the shaded region
​

Answer 1

big rectangle: l = 12 + 3 + 3 = 18m, b = 12 + 2 + 2 = 16m

small rectangle = l = 12m , b = 9m

A¹ = l × b = 18 × 16 = 288m²

A² = l× b = 12 × 9 = 108m²

shaded Area = A¹ - A² = 288 - 108 = 180m²