Answer:
<h2>2.5*10^0</h2>Step-by-step explanation:
To write a number in scientific notation or standard form we write the number and multiply it by 10 to the power of any number
The proper format for scientific notation is a x 10^b and it is read "a times 10 to the power of b"
Given the diameter of 2.5
in standard form or scientific notation is