James has a short drive to his garage which he wishes to pave with a single layer of bricks. If his square drive has side length 2m and James buys the bricks in stacks of 10 with each brick being 0.2m long and half as wide how many stacks must James buy?

There's a lot of information to take on in this question so it's firstly important to isolate the facts: -The drive needs to be paved with a single layer of bricks -The drive is a square with length of 2m -Each brick has length 0.2m and width 0.1m -Each stack has 10 bricks Notice how no information was given on the depth of the bricks - this is unimportant given only a single layer of bricks is needed. Surface area of the square drive = 22 = 4m2 Surface area of a single rectangular brick = 0.20.1 = 0.02m2 Number of bricks needed = 4/0.02 = 200 Number of stacks needed = 200/10 = 20

TD
Answered by Tutor195051 D. Maths tutor

2717 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

5x-7 = 3x + 3, solve x


Find the gradient of the line on which the points (1,3) and (3,4) lie and find the y-coordinate of the line at x = 7.


Work out 51% of 400


How do I know wether to use the sine or cosine rule?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences