SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

  • Login
  • Get Help
  • About

Area, SMB-035

The surface area of a brick is given by the rule:

total surface area = 2 × [(width × height) + (width × length) + (height × length)]

The brick shown has a total surface area of 982 square centimetres.
 

What is the width of the brick?   (2 marks)

--- 5 WORK AREA LINES (style=lined) ---

Show Answers Only

`10.5\ text(cm)`

Show Worked Solution

`text(Let)\ \ w = text(width of the brick)`

`text(Surface Area)` `= 2 xx [8w + 22w + (8 xx 22)]`
`982` `= 2(30w + 176)`
`982` `= 60w + 352`
`60w` `= 630`
`:. w` `= 10.5\ text(cm)`

Filed Under: Area and Surface Area Tagged With: num-title-ct-corea, smc-4234-40-SA (prisms)

Copyright © 2014–2025 SmarterEd.com.au · Log in