maths question?

Question

the number
0.000038 is in metres how do i convert this number in to centimetres?
and what how wld i represent this number in standard form?

thanks
tuff

Answer 1

one metre is 100 centimetres so multiply by 100
i.e. 0.0038cm or 3.8*10^-3cm

Answer 2

Since the prefix 'centi' indicates a fraction of one hundredth, you need to multiply the number of metres by 100 to find the number of centimetres. This would give you 0.0038 centimetres.

Standard form utilises one significant figure prior to the use of a decimal point, the given power of 10 representing the number of places by which the genuine decimal point has been 'shifted' for this purpose.

Looking at the original number, i.e. 0.000038, the single pre-decimal figure would be the '3' and the displacement of the decimal point would be 5 spaces. Since the standard form number would thus be 3.8, i.e. larger than the original number, the power (index) of 10 is to be represented as a negative number. Thus the representation in standard form would be 3.8x10^(-5). The number of centimetres, treated in much the same way, would be 3.8x10^(-3).

I hope this helps.

Answer 3

In standard form- 3.8 x 10 to the power of -5 (Easiest way, just count all the zeros before your first digit)

To get from metres to centimetres- 100cm = 1m
So you multiply the metres by 100.
0.000038 x 100
= 0.0038cm

Answer 4

Just multiply meters by 100 whenever you want to convert it to centimeters

0.000038m X 100 = 0.0038 cm

for standard form, shift decimal to the unit place and count places you jumped.

0.0038 cm = 3.8 X 10 ^ (-3)

As we jumped three places we wrote 3 as power of ten. Negative sign shows that we shifted decimal from left to right. If it was right to left sign would be positive like: (3800 = 3.8 X 10^3)

Answer 5

To change to cm, x by 100 (move decimal point 2 places to the right)
Answer = 0.0038 cm
0.0038 = 3.8 x 10^(-3) in standard form.

Answer 6

1meter= 100 centimeter
so, multiply the number with 100 to convert it to centimeters
0.000038m=0.000038*100 cm
=0.0038 cm

to represent it in the standard form, write it like this:

3.8 * 10^(-3)

Answer 7

Multiply by 100 = 0.0038 cm = 0.038 mm = 38 micro-metres

Answer 8

To convert c to m divide by 100. Or, take out two noughts after the decimal point! 0.0038.

Answer 9

1 meter = 100 cm

Answer 10

I don't know what you mean by standard form. If you mean standard scientific notation then:

0.000038 meters = 0.0038 cm = 3.8 x10^-3 cm = 3.8 x10^-5m