a) Standard concrete building blocks have dimensions 44.0 cm by 21,5 cm by 10.0 cm, correct to 1 decimal place. A house is built using 3565 of these concrete blocks. Henry says Placed end to end, the blocks from the house would definitely reach over 1.5 km. Show that Henry's statement is correct.

b) A standard concrete block should weigh 6.1Kg, correct to 1 decimal place. A lorry can carry a maximum load of 30 tonnes. Calculate the maximum number of standard concrete blocks that the lorry should be able to carry​