Question

the adjacent figure so are rug which has a white centre and a shaded border 250 cm wide find the area of the rug and the area of shaded border.​

Answer 1

Answer:

$\bf \: 250cm = 2.50m \\ \\ \bf \: Length \: of \: outer \: rectangle = 8 + (2.5 + 2.5) \\ \\ \bf \: = 8 + 5 \\ \\ \bf \: = 13m \\ \\ \bf \: Breadth \: of \: outer \: rectangle = 5 + 5 = 10m \\ \\ \bf \:A rea \: of \: shaded \: region = Area \: of \: outer \: rectangle - Area \: of \: inner \: rectangle \\ \\ \bf \: \implies (13 \times 10) - (8 \times 5) \\ \\ \bf \implies \: 130 {m}^{2} - 40 {m}^{2} \\ \\ \implies \boxed{\bf90 {m}^{2} }$