Question

In a shelf there are 6 notebooks each of thickness 20mm and 6 sheets of paper each of thickness 0.015mm. what is the total thickness of the shelf? express the answer in standard form.

Answer 1

Answer:

Thickness of notebooks= 6*20= 120mm

Thickness of sheets= 6* .015mm = 0.9mm

Total thickness= 120 + 0.9 mm= 120.9 mm

= 1.209 cm

Answer 2

Answer:

120.9mm

Or

1209/10 mm

Step-by-step explanation:

Thickness of notebooks = 6×20

= 120 mm

Thickness of sheets = 6×0.015

= 0.09 mm

Hence, the total Thickness of the self

= 120 + 0.09 mm

= 120. 09 mm

Or,

= 12.009 cm