An inch is approximately equal to 0.02543 metres. Write this distance in standard form.

Given 1 inch = 0.02543 metres

⇒ 0.02543 = =

We know that by laws of exponents, .

⇒ = 2.543 × 10^-2 metres

∴ In standard form, 1 inch = 2.543 × 10^-2 metres.