Problems: Length and Time

Rectangle boxQuestion 1

The figure below is a full-size diagram of a rectangular block.

 

(a) Use your rule to measure the lengths of the three sides AB, BC and CD. Write your values below, in cm, to 2 significant figures.

length of AB = ……………………. cm

length of BC = ……………………. cm

length of CD = …………………… cm

(b) Write down the equation you would use to calculate the volume of the block. Do not attempt a calculation.

(c) If you used your values from (a), what would be the unit for the volume of the block?


Question 2

Some cheese purchased from a shop is supplied as the block shown in Fig

Volume of match box

Use the information in Fig to calculate the volume of the block.


Measuring Cylinders

Question 3

(a) A measuring cylinder contains 100 cm3 of water. 20 cm3 of the water is poured into a beaker.

On Fig.1  mark the level of the water left in the cylinder.

(b) A rule, calibrated in cm, is placed alongside the measuring cylinder, as shown in Fig.2.

          (i) What is the length of the measuring cylinder, from zero up to the 100 cm3 mark?

          (ii) The volume of a cylinder is found using the equation

volume = cross-sectional area × length.

Calculate the cross-sectional area of the measuring cylinder.

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