Question

A rectangular shape land has perimeter 22km and its length is 6km. Find the area of the land.
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Answer 1

Answer

30 km² .

$\huge \bf \red{Solution}$

Perimeter of a rectangular land = 22 km.

Length of a land = 6 km

Breadth of a land = ?

Perimeter of rectangle = 2(L + B)

$\sf22 = 2(6 + x)$

$\sf \: 11 = 6 + x$

$\sf11 - 6 = x$

$\longrightarrow \quad \qquad \underline{ \boxed{ \bf \: x = 5}}$

Now, Area of rectangular land = L × B

$\sf\: Area_{(rectangle)} =( 6 \times 5) {km}^{2} = 30 {km}^{2}$