


Get live Maths 1-on-1 Classs - Class 6 to 12
Examples
Example 2 Important
Example 3
Example 4
Example 5
Example 6 Important
Example 7
Example 8 Important
Example 9
Example 10
Example 11 Important You are here
Example 12
Example 13
Example 14 Important
Example 15
Example 16 Important
Example 17
Example 18 Important
Example 19
Surface Area and Volume Formulas Important
Last updated at March 16, 2023 by Teachoo
Example 11 A wall of length 10 m was to be built across an open ground. The height of the wall is 4 m and thickness of the wall is 24 cm. If this wall is to be built up with bricks whose dimensions are 24 cm × 12 cm × 8 cm, how many bricks would be required? Total number of bricks = (𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑤𝑎𝑙𝑙)/(𝑣𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑏𝑟𝑖𝑐𝑘𝑠) Hence we need to find volume of wall & volume of bricks For wall Length of wall = 10m Breadth of wall = 24 cm Height of wall = 4 m Volume of the wall = Length × Breadth × height = 1000 × 24 × 400 cm3 For brick Length of brick = 24 cm Breadth of brick = 12 cm Height of brick = 8 cm volume of each brick = length × breadth × height = 24 × 12 × 8 cm3 Now, Total number of bricks = (𝑉𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑤𝑎𝑙𝑙)/(𝑣𝑜𝑙𝑢𝑚𝑒 𝑜𝑓 𝑏𝑟𝑖𝑐𝑘𝑠) = (1000 × 24 × 400)/(24 × 12 × 8) = 4166.6 = 4167(approx.) So, the wall requires 4167 (approx.) bricks.