A cylindrical tube 14.7 cm high and 1.60 cm in diameter is used to collect blood samples. How many cubic decimeters (dm3) of blood can it hold (V of a cylinder = πr2h)?

Question

Give your answer to the correct number of significant figures.

The answer is blank dm³

Not scientific notation.

Answer 1

First, convert 14.7 cm and 1.60 cm to decimeters ... bit easier to manage then later

Volume of a cylinder = the area of the round base x height of the cylinder

V = Bh = π * r^2 * h

Plug in the radius (note: you are given the diameter)

and height for the cylinder and use a calculate to solve for volume of cylinder

Have you had a session on significant figures?

General rule for multiplication and division - which are what's involved here -

is to look for the value with the fewest

That zero at the end of 1.60 is significant ...

Your final answer can have no more significant figures than the fewest