Question

The size of a plant cell is 0.00001275 m. express it in standard form.

Answer 1

0.00001275
= 1275/100000000
= 1275×10^-8
= 1.275 × 10^3 × 10^-8
= 1.275× 10^-5

Answer 2

$\sf The \: size \: of \: a \: plant \: cell = 1.275 \times {10}^{ - 5} \: \: m$

Given :

The size of a plant cell is 0.00001275 m

To find :

To express size of a plant cell in standard form

Concept :

For any given number Standard form is a way to express the number .

It is generally used to express a large or a small number

The standard form of any given number is

$\sf = m\times {10}^{n}$

Where m is a number such that 1 ≤ m < 10 and n is the exponent of 10

Solution :

Step 1 of 2 :

Write down size of a plant cell

The size of a plant cell is 0.00001275 m

Step 2 of 2 :

Express size of a plant cell in standard form

We express size of a plant cell in standard form

The size of a plant cell

$\sf = 0.00001275 \: \: m$

$\sf = 0.1275 \times {10}^{ - 4} \: \: m$

$\sf = 1.275 \times {10}^{ - 5} \: \: m$

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