math L2 #5

Question

Answer 1

5a)

Measurements of rectangular paper sheets are .

Area of the rectangle is .

Step 1:

Find the area of the sheet.

Substitute and in .

Area of the rectangular sheet is sq-mm.

Step 2:

Find the area of the sheet in square centimeters.

.

Area of the rectangular sheet in sq-cm is .

Step 3:

Find the area of the sheet in square meters.

.

Area of the rectangular sheet in sq-m is .

Solution:

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 .

Answer 2

5b)

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 to measure area of the rectangular sheet in square centimetres when compared to square millimetres and square metres.

Hence appropriate area is sq-cm.