Measurements of rectangular papersheets are $\"\"$ .

Area of the rectangle is $\"\"$ .

Find the area of the sheet.

Substitute $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

Area of the rectangular sheet is $\"\"$ sq.mm.

Find the area of the sheet in square centimetres.

$\"\"$ .

$\"\"$

Area of the rectangular sheet in sq.cm is $\"\"$ .

Find the area of the sheet in square metres.

$\"\"$ .

$\"\"$

Area of the rectangular sheet in sq.m is $\"\"$ .

(b)

Observe the results of part (a):

Area of the rectangular sheet is $\"\"$ sq-mm.

Area of the rectangular sheet in sq-cm is $\"\"$ .

Area of the rectangular sheet in sq-m is $\"\"$ .

It is easy measure area of the rectangular sheet in square centimetres.

Hence appropiate area is $\"\"$ sq-cm.