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Measurement, NAP-J3-CA36

A poster has an area of 5250 square centimetres.

What is the area of the poster in square millimetres?

 
 5.25 square millimetres
 
 52.50 square millimetres
 
 52 500 square millimetres
 
 525 000 square millimetres
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`text(525 000 square millimetres)`

Show Worked Solution

`text(Solution 1:)`

`text(One example of the dimensions of a 5250 cm²)`

`text(rectangle can be:  525 cm × 10 cm)`

`text(Converting to millimetres:)`

`5250\ text(mm) xx 100\ text(mm) = 525\ 000\ text(square millimetres)`

 

`text(Solution 2:)`

`text(Scale factor of converting cm to mm = 10)`

`text(Scale factor of converting cm² to mm²)\ = 10 xx 10 = 100`

`:. 5250\ text(cm²) xx 100 = 525\ 000\ text(mm²)`

Measurement, NAP-B3-CA29

This plan shows 3 fenced paddocks.

Their areas are measured in hectares.
 

 
1 hectare = 2.47 acres.

The total area of the 3 paddocks in acres is closest to

`2.73` `6.75` `16.67` `16.77`
 
 
 
 
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`16.67\ text(acres)`

Show Worked Solution
`3/4` `= 0.75`
`2 1/4` `= 2.25`
`3 3/4` `= 3.75`

 

`text(Total acres)` `=(0.75 + 2.25 + 3.75) xx 2.47`
  `=6.75 xx 2.47`
  `=16.67\ text(acres)`

Measurement, NAP-I4-NC29

Leigh has a picnic blanket with an area of 5 square metres.

What is the area of her picnic blanket in square centimetres?

`25\ text(cm²)` `50\ text(cm²)` `500\ text(cm²)` `50\ 000\ text(cm²)` `250\ 000\ text(cm²)`
 
 
 
 
 
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`50\ 000\ text(cm²)`

Show Worked Solution
`1\ text(m²)` `= 100\ text(cm²) xx 100\ text(cm²)`
  `= 10\ 000\ text(cm²)`
   
`:. 5\ text(m²)` `= 50\ 000\ text(cm²)`