4. Now work out the area of these rectangles. Remember to record the correct unit of measurement in your answer (cm2


or m2


Rectangle 1 Length –26cm Width – 18cm Area – ?


Rectangle 4


Length – 15.3m Width – 7.5m Area – ?


). Rectangle 2


Length – 13cm Width – 6.9cm Area – ?


Rectangle 5


Length – 10.7cm Width – 9.1cm Area – ?


Rectangle 3 Length – 5.7m Width – 4.8m Area – ?


Rectangle 6 Length – 14m Width – 9.56m Area – ?


5. A principal bought new lino to put on the fl oors of 4 of the classrooms in the school. a) If each of the classrooms was 9.7m × 13m, how much lino did she need? b) What was the total cost if the lino cost €19 per square metre?


6. Before putting down the lino, the principal had the noticeboards painted. If each of the 4 noticeboards was 2.8m long and 1.5m wide and a tin of paint would cover 5.6 square metres of noticeboard, how many tins of paint did the principal need to buy?


Puzzler


This square is 8cm in length. What is the area of the shaded section?


?cm


area = length × width 132 = ? × 11


So length = 12cm


11cm


Area = 132cm2


Area 1


193


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