Question

Find the area of the border (shaded portion) from the following figures​

Answer 1

Answer:

Area of border = 64m²

Step-by-step explanation:

Length of inner rectangle = 20m

Breadth of inner rectangle = 10m

Area of inner rectangle = lb = 20m × 10m = 200m²

Length of outer rectangle = 20 + 2 = 22m

Breadth of outer rectangle = 10 + 2 = 12m

Area of outer rectangle = lb = 22m × 12m = 264m²

Area of border = Area of outer rectangle - Area of inner rectangle

Area of border = 264m² - 200m² = 64m².