Question

Paolo is building a brick wall.So far,the wall has five layers of bricks.Each brick is 7.5 cm high.The layer of mortar is between the bricks are 15mm thick. a.workout the total height of the wall in centimetre. b.How many more layers of bricks does paolo need,for the wall to reach a total height of 0.7m?

Answer 1

Answer:

Step-by-step explanation:

7.77777778

Firstly add the hight of brick with morter after converting the morter in cm ...ie morter 15mm= 1.5cm + brick hight 7.5cm= 9cm

Total hight of wall 0.7m i.e 70cm

Then divide 70/9= 7.777777778